User:Cacycle/editor.js

Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.

/* <pre><nowiki> */


/*

Name:    diff.js
Version: 0.5.0 (June 18, 2006)
Info:    http://en.wikipedia.org/wiki/User:Cacycle/editor
Code:    http://en.wikipedia.org/wiki/User:Cacycle/editor.js

Comfortable JavaScript editor extension for Wikipedia edit pages by [[User:Cacycle]]
See [[User:Cacycle/Editor]] for a description and [[User:Cacycle/Editor.js]] for this code.
Features include:
* Regular expression search and replace
* Server-independent ''Show preview'' and ''Show changes''
* One-click fixing of common mistakes
* Convert html tables and other markup to wikicode
* Undo/redo
* Input boxes with history
* Fullscreen view
* Find ahead as you type
* Horizontal cursor memory
See [[User:Cacycle/Editor]] for an installation guide.
The program works only for the mozilla browsers Mozilla, Mozilla Firefox, and Mozilla SeaMonkey.
The code is currently under active development and might change rapidly.
This code has been released into the public domain.

*/


//
// configuration variables
//

// levels of undo (each level holds the whole text)
var undoBufferMax = undoBufferMax || 20;

// style for preview box
var stylePreviewBox = stylePreviewBox || 'background-color: #f9f9f9;';

// style for custom edit buttons
var styleButtons = styleButtons || 'font-size: smaller; padding-left: 0.1em; padding-right: 0.1em; margin-left: 0.1em; margin-right: 0.1em; height: 1.6em; vertical-align: bottom;';

// history length for summary, find and replace fields
var findHistoryLength = findHistoryLength || 10;

// presets for input field dropdown options
var presetOptions = presetOptions || [];
presetOptions['summary'] = presetOptions['summary'] || [
 'Copyedit',
 'Linkfix',
 'Reverting vandalism',
 'Formatting source text'
];

// expiration time span for history cookies in seconds
var cookieExpireSec = cookieExpireSec || (365 * 24 * 60 * 60);

// enable cursor horizontal position memory
var cursorMemory = cursorMemory || true;

// show at least this number of lines ahead of cursor movement
var scrollMargin = scrollMargin || 1;

// show at least this number of lines ahead of cursor movement for
var findMargin = findMargin || 2;

// find ahead checkbox selected by default
var findAheadSelected = findAheadSelected || true;


// global variables


// history
var fieldHist = [];
var cookieName = [];
var inputElement = [];
var selectElement = [];

var checkMarker = [];
checkMarker[true] = '\u2022';
checkMarker[false] = '\u22c5';

// undo
var undoBuffer = new Array(undoBufferMax);
var undoBufferSelStart = new Array(undoBufferMax);
var undoBufferSelEnd = new Array(undoBufferMax);
var undoBufferFirst = 0;
var undoBufferLast = 0;
var undoBufferCurr = 0;

// fullscreen
var normalTextareaWidth;
var normalTextareaHeight;
var normalTextareaMargin;
var normalTextareaRows;
var normalPageXOffset;
var normalPageYOffset;
var normalTreePos = {};
var fullScreenMode = false;
var fullButtonValue = 'Full screen';
var fullButtonTitle = 'Full screen editing mode';
var normalButtonValue = 'Normal view';
var normalButtonTitle = 'Back no normal page view';
var normalFloatButtonValue = 'Back';

// textarea text info object
var textRows = new Object();
textRows.lineStart = [];
textRows.lineLength = [];
textRows.rowStart = [];
textRows.rowLength = [];

var textareaElement = {};
var lastChangePos;

// counter
var i;
var j;


// load the editor after page loading
if (window.addOnloadHook != null) {
 addOnloadHook(SetupEditor);
}

//
// find and replace functions
//

function Edit(what) {

// add focus to textbox
 textareaElement.focus();

// get the scroll position
 var scrollTopPx = textareaElement.scrollTop;
 var scrollHeightPx = textareaElement.scrollHeight;

// convert strange spaces, remove non-\n linebreak characters
 convertStrangeSpaces();

 var textNew;
  var textLength = textareaElement.value.length;

// get the find text
 var find = document.getElementById('findText');
 var findText = find.value;

// get the replace text
 var replace = document.getElementById('replaceText');
 var replaceText = replace.value;

// get checkboxes
 var caseSensitive = document.getElementById('caseSensitive');
 var regExp = document.getElementById('regExp');

// changed flags
 var textChanged = false;
 var posChanged = false;

// get the text selection info
 var startPos = textareaElement.selectionStart;
 var endPos = textareaElement.selectionEnd;
 var selected = textareaElement.value.substring(startPos, endPos);
 var startPosNew;
 var endPosNew;

// manipulate selected text
 if (selected != '') {

// lowercase selection
 if ('lowercase'.indexOf(what) >= 0) {
 var selectedNew = selected.toLowerCase();
 textNew = textareaElement.value.substring(0, startPos) + selectedNew + textareaElement.value.substring(endPos);
 startPosNew = startPos;
 endPosNew = endPos;
 textChanged = true;
 }

// bold selection
 if ('bold'.indexOf(what) >= 0) {
 var selectedNew;
 if ( /^\'\'\'.*\'\'\'$/.test(selected) ) {
 selectedNew = selected.replace(/^\'\'\'(.*)\'\'\'$/, '$1');
 startPosNew = startPos;
 endPosNew = endPos - 6 ;
 }
 else {
 selectedNew = "'''" + selected + "'''";
 startPosNew = startPos;
 endPosNew = endPos + 6;
 }
 textNew = textareaElement.value.substring(0, startPos) + selectedNew + textareaElement.value.substring(endPos);
 textChanged = true;
 }

// italic selection
 if ('italic'.indexOf(what) >= 0) {
 var selectedNew;
 if ( /^\'\'.*\'\'$/.test(selected) ) {
 selectedNew = selected.replace(/^\'\'(.*)\'\'$/, '$1');
 startPosNew = startPos;
 endPosNew = endPos - 4 ;
 }
 else {
 selectedNew = "''" + selected + "''";
 startPosNew = startPos;
 endPosNew = endPos + 4;
 }
 textNew = textareaElement.value.substring(0, startPos) + selectedNew + textareaElement.value.substring(endPos);
 textChanged = true;
 }
 }

// increase heading level
 if ('headingmore'.indexOf(what) >= 0) {
 var selectedNew = '';

// nothing selected, get current line
 if (selected == '') {
 var lineStart = textareaElement.value.lastIndexOf('\n', startPos - 1) + 1;
 var lineEnd = textareaElement.value.indexOf('\n', startPos);
 if (lineEnd < 0) {
 lineEnd = textLength;
 }
 selectedNew = textareaElement.value.substring(lineStart, lineEnd);

// increase heading level
 if ( /^\=\=.*\=\= *$/.test(selectedNew) ) {
 selectedNew = selectedNew.replace(/^(\=\=+) *(.*?) *(\=\=+) *$/, '=$1 $2 $3=');
 }

// make the line a heading
 else {
 selectedNew = selectedNew.replace(/(^ +| +$)/g, '');
 if (selectedNew.length < 80) {
 selectedNew = '== ' + selectedNew + ' ==';
 }
 else {
 lineStart = startPos;
 lineEnd = endPos;
 selectedNew = selected;
 }
 }
 startPosNew = lineStart;
 endPosNew = lineStart;
 textNew = textareaElement.value.substring(0, lineStart) + selectedNew + textareaElement.value.substring(lineEnd);
 }

// increase all headings in selected text
 else {
 var lines = selected.split('\n');

// cycle trough the lines
 for (i = 0; i < lines.length; i++) {
 var line = lines[i];

// increase heading level in selected text
 if ( /^==.*== *$/.test(line) ) {
 line = line.replace(/^(==+) *(.*?) *(==+) *$/, '$1= $2 =$3');
 }
 selectedNew += line;
 if (i < lines.length - 1) {
 selectedNew += '\n';
 }
 }
 startPosNew = startPos;
 endPosNew = startPos + selectedNew.length;
 textNew = textareaElement.value.substring(0, startPos) + selectedNew + textareaElement.value.substring(endPos);
 }
 textChanged = true;
 }

// decrease heading level
 if ('headingless'.indexOf(what) >= 0) {
 var selectedNew = '';

// nothing selected, get current line
 if (selected == '') {
 var lineStart = textareaElement.value.lastIndexOf('\n', startPos - 1) + 1;
 var lineEnd = textareaElement.value.indexOf('\n', startPos);
 if (lineEnd < 0) {
 lineEnd = textLength;
 }
 selectedNew = textareaElement.value.substring(lineStart, lineEnd);

// decrease heading level
 if ( /^===.*=== *$/.test(selectedNew) ) {
 selectedNew = selectedNew.replace(/^=(==.*==)= *$/, '$1');
 }
 else if ( /^==.*==$/.test(selectedNew) ) {
 selectedNew = selectedNew.replace(/^== *(.*) *== *$/, '$1');
 }
 startPosNew = lineStart;
 endPosNew = lineStart;
 textNew = textareaElement.value.substring(0, lineStart) + selectedNew + textareaElement.value.substring(lineEnd);
 }

// increase all headings in selected text
 else {
 var lines = selected.split('\n');

// cycle trough the lines
 for (i = 0; i < lines.length; i++) {
 var line = lines[i];

// decrease heading level in selected text
 if ( /^===.*=== *$/.test(line) ) {
 line = line.replace(/^=(==.*==)= *$/, '$1');
 }
 selectedNew += line;
 if (i < lines.length - 1) {
 selectedNew += '\n';
 }
 }
 startPosNew = startPos;
 endPosNew = startPos + selectedNew.length;
 textNew = textareaElement.value.substring(0, startPos) + selectedNew + textareaElement.value.substring(endPos);
 }
 textChanged = true;
 }

// replacements and text fixes
 if ('spaces pipes html punct caps dashes units math'.indexOf(what) >= 0) {

 var startPosFix;
 var endPosFix;
 var selectedFix;

// apply to whole text if nothing is selected
 if (startPos == endPos) {
 startPosFix = 0;
 endPosFix = textLength;
 selectedFix = textareaElement.value;
 }
 else {
 startPosFix = startPos;
 endPosFix = endPos;
 selectedFix = selected;
 }

// apply fixes to selected text
 if      ('spaces'.indexOf(what) >= 0) { selectedFix = FixSpaces(selectedFix); }
 else if ('pipes'.indexOf (what) >= 0) { selectedFix = FixPipes (selectedFix); }
 else if ('html'.indexOf  (what) >= 0) { selectedFix = FixHTML  (selectedFix); }
 else if ('punct'.indexOf (what) >= 0) { selectedFix = FixPunct (selectedFix); }
 else if ('caps'.indexOf  (what) >= 0) { selectedFix = FixCaps  (selectedFix); }
 else if ('dashes'.indexOf(what) >= 0) { selectedFix = FixDashes(selectedFix); }
 else if ('units'.indexOf (what) >= 0) { selectedFix = FixUnits (selectedFix); }
 else if ('math'.indexOf  (what) >= 0) { selectedFix = FixMath  (selectedFix); }

// remove newlines and spaces
 selectedFix = selectedFix.replace(/\n{3,}/g, '\n\n');
 selectedFix = selectedFix.replace(/^\n+/, '');
 selectedFix = selectedFix.replace(/\n{2,}$/, '\n');

// set selection
 if (startPos == endPos) {
 startPosNew = startPos;
 endPosNew = startPos;
 }
 else {
 startPosNew = startPos;
 endPosNew = startPos + selectedFix.length;
 }

// insert selected into unchanged text
 textNew = textareaElement.value.substring(0, startPosFix) + selectedFix + textareaElement.value.substring(endPosFix);
 textChanged = true;
 posChanged = true;
 }

// prepare find regexp for find and replace
 var regExpFlags = '';
 if ('findprev findnext replaceprev replacenext replaceall'.indexOf(what) >= 0) {

// format the find text as regexp or plain text
 if (regExp.checked) {

// replace \n with newline character, other characters have already been converted
 replaceText = replaceText.replace(/((^|[^\\])(\\\\)*)\\n/g, '$1\n');
 }
 else {
 findText = findText.replace(/([\\^\$\*\+\?\.\(\)\[\]\{\}\:\=\!\|\,\-])/g, '\\$1');
 }

// set regexp flag i
 if ( ! caseSensitive.checked ) {
 regExpFlags = 'i';
 }
 }

// find / replace
 if ('findnext replacenext findprev replaceprev'.indexOf(what) >= 0) {
 if (find.value != '') {

// create regexp
 var regExpFind = new RegExp(findText, regExpFlags + 'g');

// set start position for search to right
 var indexStart;
 var result;
 if ('findnext replacenext'.indexOf(what) >= 0) {
 indexStart = startPos;
 if ( (selected.length > 0) && ('findnext'.indexOf(what) >= 0) ) {
 indexStart = startPos + 1;
 }

// execute the regexp search to the right
 regExpFind.lastIndex = indexStart;
 result = regExpFind.exec(textareaElement.value);
 }

// prepare search to the left
 else {

// set start position for search to left
 indexStart = startPos - 1;
 if ( (selected.length > 0) && ('replaceprev'.indexOf(what) >= 0) ) {
 indexStart = startPos;
 }

// cycle through the matches to the left
 var resultNext;
 do {
 result = resultNext;
 resultNext = regExpFind.exec(textareaElement.value);
 if (resultNext == null) {
 break;
 }
 } while (resultNext.index <= indexStart);
 }

// get the matched string
 var matched;
 var matchedStart;
 var matchedLength;
 if (result != null) {
 matched = result[0];
 matchedStart = result.index;
 matchedLength = matched.length;

// replace only if the next match was already selected
 if ('replacenext replaceprev'.indexOf(what) >= 0) {
 if (selected == matched) {
 var replace = selected.replace(regExpFind, replaceText);
 textNew = textareaElement.value.substr(0, matchedStart) + replace + textareaElement.value.substr(matchedStart + matched.length);
 matchedLength = replace.length;
 textChanged = true;
 }
 }

// select the found match in the textarea
 startPosNew = matchedStart;
 endPosNew = matchedStart + matchedLength;
 }
 else {
 if ('findprev replaceprev'.indexOf(what) >= 0) {
 indexStart = startPos;
 }
 startPosNew = indexStart;
 endPosNew = indexStart;
 }
 posChanged = true;
 }
 }

// replace all
 if ('replaceall'.indexOf(what) >= 0) {
 if (findText != '') {

// create regexp
 var regExpFind = new RegExp(findText, regExpFlags + 'g');


// replace all in whole text
 if (selected == '') {

// get the new cursorposition
 textNew = textareaElement.value.replace(regExpFind, replaceText);
 var textbefore = textNew.substr(0, startPos);
 textbefore = textbefore.replace(regExpFind, replaceText);
 startPosNew = textbefore.length;
 endPosNew = startPosNew;
 posChanged = true;
 }

// replace all in selection
 else {
 var replace = selected.replace(regExpFind, replaceText);
 startPosNew = startPos;
 endPosNew = startPos + replace.length;
 textNew = textareaElement.value.substr(0, startPos) + replace + textareaElement.value.substr(endPos);
 }
 textChanged = true;
 }
 }

// save search history to cookie
 if ('findnext findprev'.indexOf(what) >= 0) {
 AddToHistory('find');
 }
 if ('replacenext replaceprev replaceall'.indexOf(what) >= 0) {
 AddToHistory('find');
 AddToHistory('replace');
 }

// get the find field from the selection or the current word
 if ('findnext findprev replacenext replaceprev getfind'.indexOf(what) >= 0) {
 if ( ('getfind'.indexOf(what) >= 0) || (find.value == '') ) {

// get from the selection
 var newFind = '';
 if (selected != '') {
   newFind = selected;
 startPosNew = startPos;
 endPosNew = endPos;
 }

// get from the current word
 else {

// get until next nonword char to the right
 endPosNew = endPos;
   var pos = startPos;
   while (pos < textLength) {
     var character = textareaElement.value.substr(pos ++, 1);
     if ( character.match(/\W/) ) {
   endPosNew = pos - 1;
       break;
     }
 newFind += character;
   }

// get until next nonword char to the left
 startPosNew = startPos;
   pos = startPos - 1;
   while (pos >= 0) {
     var character = textareaElement.value.substr(pos --, 1);
     if ( character.match(/\W/) ) {
    startPosNew = pos + 2;
       break;
     }
     newFind = character + newFind;
   }
 }

// replace newlines in find field
 if (regExp.checked) {
 find.value = newFind.replace(/\n/g, '\\n');
 }
 else {
 find.value = newFind.replace(/\n.*/, '');
 }
 }
 }

// undo all
 if ('undoall'.indexOf(what) >= 0) {
 startPosNew = startPos;
 endPosNew = startPos;
 textNew = editformOrig;
 textChanged = true;
 }

// jump to top / bottom
 if ('updown'.indexOf(what) >= 0) {
 if (scrollTopPx > scrollHeightPx / 2) {
 startPosNew = 0;
 endPosNew = 0
 }
 else {
 startPosNew = textLength;
 endPosNew = textLength;
 }
 posChanged = true;
 }

// jump to the last changed position, event handler for button
 if ('lastchangepos'.indexOf(what) >= 0) {
 startPosNew = lastChangePos;
 endPosNew = lastChangePos;
 posChanged = true;
  }

// changed textarea, save undo info
 if (textChanged) {
 textareaElement.value = textNew;
 SaveUndo(textareaElement.value, startPos, endPos);
 SaveUndo(textNew, startPosNew, endPosNew);
 textRows.changed = true;
 posChanged = true;
 }

// set the selection range
 textareaElement.setSelectionRange(startPosNew, endPosNew);

// scroll the textarea to the selected text or cursor position
 if (posChanged || textChanged) {
 ParseRows();
 }
 if (posChanged) {
   ScrollTextarea(textRows.selStartRow, textRows.selEndRow, 0, findMargin, scrollTopPx);
 }
 else {
 textareaElement.scrollTop = scrollTopPx;
 }
 return;
}


//
// scroll the textarea if the selected text is outside the viewport
//

function ScrollTextarea(rowStart, rowEnd, lines, margin, scrollTopPx) {

// get top row
  var scrollHeightPx = textareaElement.scrollHeight;
  var scrollTopRow = scrollTopPx / scrollHeightPx * textRows.rowTotal;

// cusor direction: up
 if (lines <= 0) {
   if (scrollTopRow > (rowStart + lines) - margin) {
 scrollTopRow = (rowStart + lines) - margin;
 if (scrollTopRow < 0) {
   scrollTopRow = 0;
 }
 }
 }

// cusor direction: down
 if (lines >= 0) {
   if (scrollTopRow < (rowEnd + 1 + lines) + margin - textRows.rows) {
 scrollTopRow = (rowEnd + 1 + lines) + margin - textRows.rows;
 if (scrollTopRow > textRows.rowTotal + 1 - textRows.rows) {
   scrollTopRow = textRows.rowTotal + 1 - textRows.rows;
 }
 }
 }

// set scroll position
 textareaElement.scrollTop = scrollTopRow / textRows.rowTotal * scrollHeightPx;

 return;
}


//
// ParseRows: get row structure of textarea
//

function ParseRows() {

 textRows.selStart = textareaElement.selectionStart;
 textRows.selEnd = textareaElement.selectionEnd;

// if the text has not changed we don't need to parse lines and rows
 if (textRows.changed != true) {
 if (textRows.textarea == null) {
 textRows.changed = true;
 }
 else if (textRows.textarea.length != textareaElement.value.length) {
 textRows.changed = true;
 }
 else if (textRows.textarea != textareaElement.value) {
 textRows.changed = true;
 }
 }
  if (textRows.changed) {
 textRows.changed = false
 textRows.textarea = textareaElement.value;
 textRows.cols = textareaElement.cols;
 textRows.rows = textareaElement.rows;

// parse lines
 textRows.lineStart = [];
 textRows.lineLength = [];
 var pos;
 var posNext = 0;
 var line = 0;
 do {
 pos = posNext;
 textRows.lineStart[line] = pos;
 posNext = textRows.textarea.indexOf('\n', pos) + 1;
 textRows.lineLength[line] = posNext - pos - 1;
 line ++;
 } while (posNext > 0);
 textRows.lineLength[line - 1] = textRows.textarea.length - pos;
   textRows.lineTotal = line;

// parse rows
 textRows.rowStart = [];
 textRows.rowLength = [];
 var lineTotal = textRows.lineTotal;
 var row = 0;
 for (line = 0; line < lineTotal; line ++) {
 var rowStart;
 var rowStartNext = textRows.lineStart[line];
 var lineEnd = rowStartNext + textRows.lineLength[line];

// cycle row by row to the end of the line
 do {
 rowStart = rowStartNext;
 pos = 0;
 posNext = rowStart;
 if (rowStart + textRows.cols >= lineEnd) {
 rowStartNext = lineEnd;
 }

// find last space before or first after right border
 else {
 do {
 pos = posNext;
 posNext = textRows.textarea.indexOf(' ', pos + 1);
 } while ( (posNext >= 0) && (posNext <= rowStart + textRows.cols) && (posNext < lineEnd) );
 if (pos > rowStart) {
 rowStartNext = pos + 1;
 }
 else if ( (posNext >= 0) && (posNext < lineEnd) ) {
 rowStartNext = posNext + 1;
 }
 else {
 rowStartNext = lineEnd;
 }
 }

// jump over trailing spaces
 while (textRows.textarea.charAt(rowStartNext) == ' ') {
 rowStartNext ++;
 }

// set row start and length
 textRows.rowStart[row] = rowStart;
 textRows.rowLength[row] = rowStartNext - rowStart;
 row ++;
 } while (rowStartNext < lineEnd);
 }
   textRows.rowTotal = row;
 }

// get text selection rows by stepwise approximation
 var rowTotal = textRows.rowTotal;
 var selStart = textRows.selStart;
 var selEnd = textRows.selEnd;

// find the largest 2^n < rows
 var add = 1;
 while (add < rowTotal) {
   add = add * 2;
 }
  add = add / 2;

// approximate with decreasing add
 var selStartRow = add;
 var selEndRow = add;
 while (add >= 1) {

// approximate selection start
 if (selStartRow >= rowTotal) {
 selStartRow -= add;
 }
 else if (textRows.rowStart[selStartRow] > selStart) {
 selStartRow -= add;
 }
 else {
 selStartRow += add;
 }

// approximate selection end
 if (selEndRow >= rowTotal) {
 selEndRow -= add;
 }
 else if (textRows.rowStart[selEndRow] > selEnd) {
 selEndRow -= add;
 }
 else {
 selEndRow += add;
 }
   add = add / 2;
 }
 if (textRows.rowStart[selStartRow] > selStart) {
 selStartRow --;
 }
 if (textRows.rowStart[selEndRow] > selEnd) {
 selEndRow --;
 }
 textRows.selStartRow = selStartRow;
 textRows.selEndRow = selEndRow;

 return;
}


//
// fix characters, spaces, empty lines, certain headings
//

function FixSpaces(text) {

// remove trailing spaces from lines
 text = text.replace(/ +\n/g, '\n');

// empty line before and after headings, spaces around word (lookahead)
 text = text.replace(/(\n={2,}) *([^\n]*?) *(={2,})(?=\n)/g, '\n$1 $2 $3\n\n');

// uppercase important headings
 text = text.replace(/\n== external links? ==\n/ig, '\n== External links ==\n');
 text = text.replace(/\n== see also ==\n/ig, '\n== See also ==\n');
 text = text.replace(/\n== references? ==\n/ig, '\n== References ==\n');

// add space after * # : ; (list) and after {| |- | (table)
 text = text.replace(/(^|\n)([\*\#\:\;]+|\{\||\|\-|\|\}|\|) */g, '$1$2 ');
 text = text.replace(/ +\n/g, '\n');

// empty line before and after tables
 text = text.replace(/\n+(\{\|)/g, '\n\n$1');
 text = text.replace(/(\n\|\}) *([^\n]*)[\n|$]+/g, '$1\n\n$2\n\n');

// empty line before and after lists
 text = text.replace(/(^|\n)([^\*\#\:\;].*?)\n+([\*\#\:\;])/g, '$1$2\n\n$3');
 text = text.replace(/(^|\n)([\*\#\:\;].*?)\n+([^\*\#\:\;])/g, '$1$2\n\n$3');

// split into lines and change single lines, used to handle tables
 var lines = text.split('\n');
 text = '';
 var tableflag = false;
 for (var i = 0; i < lines.length; i++) {
 var line = lines[i];

// do not change lines starting with a blank
 if ( ! line.match(/^ /) ) {

// detect table
 if ( line.match(/^(\{\||\!|\|[^}])/) ) {
 tableflag = true;
 }
 else if ( line.match(/^\|\}/) ) {
 tableflag = false;
 }

// changes only to be done in tables
 if (tableflag) {

// add spaces around ||
 line = line.replace(/ *\|\| */g, ' || ');
 }

// changes not to be done in tables
 if ( ! tableflag) {

// empty line before and after images
 line = line.replace(/^(\[\[image:.*?\]\])/ig, '\n$1');
 line = line.replace(/(\[\[image:.*?(\[\[.*?\]\].*?)*\]\])$/ig, '$1\n');

// empty line before and after includes
 line = line.replace(/^(\{\{.*?\}\})/g, '\n$1');
 line = line.replace(/(\{\{.*?\}\})$/g, '$1\n');

// to be done: convert single newlines into spaces
//      line = line.replace(/(\n[^\n \*\#\:\;\|\{].*?)\n([^\n \*\#\:\;\|\{])/g, '$1 $2');
 }
 }

// concatenate the lines
 text += line;
 if (i < lines.length - 1) {
 text += '\n';
 }
 }

// remove spaces in wikilinks
 text = text.replace(/\[\[ *([^\n]*?) *\]\]/g, '[[$1]]');

// remove spaces in external links
 text = text.replace(/\[ *([^\n]*?) *\]/g, '[$1]');

// no space around pipes before brackets
 text = text.replace(/ +\| +\]\]/g, '|]]');

// no space around pipes before curly brackets
 text = text.replace(/ +\| +\}\}/g, '|}}');

// no empty line between headings and includes
 text = text.replace(/\n(==+ [^\n]*? ==+\n)\n+(\{\{.*?\}\})/g, '$1$2');

// spaces in comments
 text = text.replace(/(<!--) *(.*?) *(-->)/g, '$1 $2 $3');

// empty lines around html comments, spaces in comments
 text = text.replace(/\n+(<!--.*?-->)\n+/g, '\n$1\n\n');
 text = text.replace(/^(<!--.*?-->)\n+/g, '$1\n');
 text = text.replace(/\n+(<!--.*?-->)$/g, '\n$1');

// empty line before and after categories
 text = text.replace(/(\[\[category:[^\n]*?\]\]) */gi, '\n\n$1\n\n');

// categories not separated by empty lines (lookahead)
 text = text.replace(/(\[\[category:[^\n]*?\]\])\n*(?=\[\[category:[^\n]*?\]\])/gi, '$1\n');

 return(text);
}


//
// fix space around vertical bars
//

function FixPipes(text) {

// fix basic
 text = FixSpaces(text);

// space around pipes in wikilinks but not in images
 text = text.replace(/(\[\[(?!image:)[^\n]+?) *\| *(.*?\]\])/ig, '$1 | $2');

// space around pipes in templates
 text = text.replace(/(\{\{)([^\n]+?)(\}\})/g,
 function (p, p1, p2, p3) {
 p2 = p2.replace(/ *(\|) */g, ' | ');
 return(p1 + p2 + p3);
 }
 );

 return(text);
}


//
// fix html to wikicode
//

function FixHTML(text) {

// fix basic
 text = FixSpaces(text);

// convert italic
 text = text.replace(/<i(\s.*?)?>|<\/i(\s.*?)?>/gi, '\'\'');

// convert bold
 text = text.replace(/<b(\s.*?)?>|<\/b(\s.*?)?>/gi, '\'\'\'');

// convert tables
 text = text.replace(/\s*<\/td(\s.*?)?>\s*/gi, '');
 text = text.replace(/\s*<\/th(\s.*?)?>\s*/gi, '');
 text = text.replace(/\s*<\/tr(\s.*?)?>\s*/gi, '');

 text = text.replace(/\s*<td\s*>\s*/gi, '\n| ');
 text = text.replace(/\s*<td\s+(.*?)? *>\s*/gi,
 function (p, p1) {
 return('\n| ' + p1.replace(/\s+/g, ' ') + ' | ');
 }
 );
 text = text.replace(/\s*<th\s*>\s*/gi, '\n! ');
 text = text.replace(/\s*<th\s+(.*?)? *>\s*/gi,
 function (p, p1) {
 return('\n! ' + p1.replace(/\s+/g, ' ') + ' | ');
 }
 );

 text = text.replace(/\s*<tr\s*>\s*/g, '\n|-\n');
 text = text.replace(/\s*<tr\s+(.*?)? *>\s*/gi,
 function (p, p1) {
 return('\n|- ' + p1.replace(/\s+/g, ' ') + '\n');
 }
 );

 text = text.replace(/\s*<table\s*>\s*(\|-\n)?/gi, '\n{|\n');
 text = text.replace(/\s*<table\s+(.*?)? *>\s*(\|-\n)?/gi,
 function (p, p1) {
 return('\n{| ' + p1.replace(/\s+/g, ' ') + '\n');
 }
 );
 text = text.replace(/\s*<\/table\s+(.*?)?>\s*/gi, '\n|}\n');

// convert links
 text = text.replace(/<a\s+(.*?)href\s*=\s*(\"|\')\s*(\S*?)\s*(\"|\')(.*?)>\s*(.*?)\s*<\/a>/gi,
 function (p, p1, p2, p3, p4, p5, p6) {
 if (p6 == '') {
 return('[' + p3 + ']');
 }
 return('[' + p3 + ' ' + p6.replace(/\s+/g, ' ') + ']');
 }
 );
 text = text.replace(/<a\s+(.*?)href\s*=\s*(\S*?)\s+(.*?)>\s*(.*?)\s*<\/a>/gi,
 function (p, p1, p2, p3, p4) {
 if (p4 == '') {
 return('[' + p2 + ']');
 }
 return('[' + p2 + ' ' + p4.replace(/\s+/g, ' ') + ']');
 }
 );

// convert images
 text = text.replace(/<img\s+(.*?)src\s*=\s*(\"|\')\s*(\S*?)\s*(\"|\')(.*?)>/gi,
 function (p, p1, p2, p3, p4, p5) {
 return('[[Image:' + p3.replace(/^.*\/([^\/]+)$/, '$1') + ']]');
 }
 );
 text = text.replace(/<img\s+(.*?)src\s*=\s*(\S*?)\s+(.*?)>/gi,
 function (p, p1, p2, p3) {
 return('[[Image:' + p2.replace(/^.*\/([^\/]+)$/, '$1') + ']]');
 }
 );

// to do: lists, h1 - hx

 return(text);
}


//
// fix space before punctuation marks
//

function FixPunct(text) {

// fix basic
 text = FixSpaces(text);

// remove space before .,: (; could be a definition)
 text = text.replace(/([a-zA-Z\'\"\”\]\}\)]) +([\.\,\:])/g, '$1$2');

 return(text);
}


//
// fix capitalizing of lists, linklists, images, headings
//

function FixCaps(text) {


// fix basic
 text = FixSpaces(text);

// uppercase lists
 text = text.replace(/^([\*\#\:\;]+ (\&\w+\;|\{\{.*$|[\W\d])*)([^\W\d].*)$/gm,
 function (p, p1, p2, p3) {
 if ( ! p3.match(/^(http|ftp|alpha|beta|gamma|delta|epsilon|kappa|lambda)/) ) {
 p3 = p3.substr(0, 1).toUpperCase() + p3.substr(1);
 }
 return(p1 + p3);
 }
 );


// uppercase link lists (link)
 text = text.replace(/^([\*\#\:\;]+ \[\[)([^\n]*?)(\]\])/gm,
 function (p, p1, p2, p3) {

// uppercase link
 p2 = p2.replace(/^((\&\w+\;|[\W\d])*)([^\W\d].*)$/,
 function (p, p1, p2, p3) {
 if ( ! p3.match(/^(http|ftp|alpha|beta|gamma|delta|epsilon|kappa|lambda)/) ) {
 p3 = p3.substr(0, 1).toUpperCase() + p3.substr(1);
 }
 return(p1 + p3);
 }
 );

// uppercase comment
 p2 = p2.replace(/(\| *(\&\w+\;|[\W\d])*)([^\W\d].*)$/,
 function (p, p1, p2, p3) {
 if ( ! p3.match(/^(http|ftp|alpha|beta|gamma|delta|epsilon|kappa|lambda)/) ) {
 p3 = p3.substr(0, 1).toUpperCase() + p3.substr(1);
 }
 return(p1 + p3);
 }
 );
 return(p1 + p2 + p3);
 }
 );

// uppercase headings
 text = text.replace(/^(==+ (\&\w+\;|[\W\d])*)([^\W\d].* ==+)$/gm,
 function (p, p1, p2, p3) {
 if ( ! p3.match(/^(http|ftp|alpha|beta|gamma|delta|epsilon|kappa|lambda)/) ) {
 p3 = p3.substr(0, 1).toUpperCase() + p3.substr(1);
 }
 return(p1 + p3);
 }
 );

// uppercase images
 text = text.replace(/(\[\[)image:(\w)([^\n]*\]\])/igm,
 function (p, p1, p2, p3) {
 return(p1 + 'Image:' + p2.toUpperCase() + p3);
 }
 );

 return(text);
}


//
// dash fixer - adds a tab that fixes several obvious en/em dash, minus sign, and such special characters.
// originally from User:Omegatron
//

function FixDashes(text) {

// fix basic
 text = FixSpaces(text);

// convert html entities into actual dash characters
 text = text.replace(/&mdash;/g, '—');
 text = text.replace(/&ndash;/g, '–');
 text = text.replace(/&minus;/g, '\u2212');

// convert -- and em dashes with or without spaces to em dash surrounded by spaces
 text = text.replace(/([a-zA-Z\'\"”\]\}\)]) *(--|—|&mdash;) *([a-zA-Z\'\"“\[\{\(])/g, '$1 — $3');

// convert - or en dashes with spaces to em dash character surrounded by spaces
 text = text.replace(/([a-zA-Z\'\"”\]\}])( |&nbsp;)+(\u2212|–|&ndash;) +([a-zA-Z\'\"“\[\{])/g, '$1$2— $4');

// convert hyphen next to lone number into a minus sign character
 text = text.replace(/([a-zA-Z\'\"”\]\>] )-(\d)/g, '$1\u2212$2');

// convert dashes to en dashes in dates
 text = text.replace(/([ \(][12]\d\d\d) ?(--?|—|&mdash;) ?([12]\d\d\d|\d\d)([ \),.;])/g, '$1–$3$4');

 return(text);
}


//
// unit formatter - new tab adds spaces between number and units, makes units consistent
// originally from User:Omegatron
//

function FixUnits(text) {

// fix basic
 text = FixSpaces(text);

// convert all &deg; into actual ° symbol
 text = text.replace(/&deg;/g, '°');

// convert the word ohm(s) or the html entity into the actual O symbol (Omega, not the actual ohm symbol &#8486;) and make sure it's spaced
 text = text.replace(/(\d) ?(Y|Z|E|P|T|G|M|k|K|h|da|d|c|m|µ|µ|µ|n|p|f|a|z|y)? ?(&Omega;|ohm|Ohm)s?([ ,.])/g, '$1 $2O$4');

// convert various micro symbols into the actual micro symbol, make sure it's spaced
 text = text.replace(/(\d) ?(&mu;|µ|&micro;)(g|s|m|A|K|mol|cd|rad|sr|Hz|N|J|W|Pa|lm|lx|C|V|O|F|Wb|T|H|S|Bq|Gy|Sv|kat|°C|M)([ ,.])/g, '$1 µ$3$4');

// convert capital K to lowercase k in units
 text = text.replace(/(\d) ?K(g|s|m|A|K|mol|cd|rad|sr|Hz|N|J|W|Pa|lm|lx|C|V|O|F|Wb|T|H|S|Bq|Gy|Sv|kat|°C|M)([ ,.])/g, '$1 k$2$3');

// capitalize units correctly
 text = text.replace(/(\d) ?(khz)([ ,.])/gi, '$1 kHz$3');
 text = text.replace(/(\d) ?(mhz)([ ,.])/gi, '$1 MHz$3');
 text = text.replace(/(\d) ?(ghz)([ ,.])/gi, '$1 GHz$3');
 text = text.replace(/(\d) ?(Y|Z|E|P|T|G|M|k|K|h|da|d|c|m|µ|µ|µ|n|p|f|a|z|y)?(hz|HZ)([ ,.])/g, '$1 $2Hz$4');
 text = text.replace(/(\d) ?(Y|Z|E|P|T|G|M|k|K|h|da|d|c|m|µ|µ|µ|n|p|f|a|z|y)?(pa|PA)([ ,.])/g, '$1 $2Pa$4');

// add a space before dB or B
 text = text.replace(/(\d) ?(dB|B)\b/g, '$1 $2');

// add a space before any units that were missed before
 text = text.replace(/(\d) ?(Y|Z|E|P|T|G|M|k|K|h|da|d|c|m|µ|n|p|f|a|z|y)?(g|m|A|K|mol|cd|rad|sr|Hz|N|J|W|Pa|lm|lx|C|V|O|F|Wb|T|H|S|Bq|Gy|Sv|kat|°C|M)([ ,.])/g, '$1 $2$3$4');

// separate one for seconds since they give a lot of false positives like "1970s". Only difference is mandatory prefix.
 text = text.replace(/(\d) ?(Y|Z|E|P|T|G|M|k|K|h|da|d|c|m|µ|n|p|f|a|z|y)(s)([ ,.])/g, '$1 $2$3$4');

// bps or b/s or bits/s --> bit/s
 text = text.replace(/([KkMmGgTtPpEeYyZz])(bps|bits?\/s|b\/s)/g, '$1bit/s');

// Bps or byte/s or bytes/s --> B/s
 text = text.replace(/([KkMmGgTtPpEeYyZz])(Bps|bytes?\/s)/g, '$1B/s');

// after that, make capitalization correct
 text = text.replace(/K(bit|B)\/s/g, 'k$1/s');
 text = text.replace(/m(bit|B)\/s/g, 'M$1/s');
 text = text.replace(/g(bit|B)\/s/g, 'G$1/s');
 text = text.replace(/t(bit|B)\/s/g, 'T$1/s');
 text = text.replace(/e(bit|B)\/s/g, 'E$1/s');
 text = text.replace(/y(bit|B)\/s/g, 'Y$1/s');
 text = text.replace(/z(bit|B)\/s/g, 'Z$1/s');

// fix a common error
 text = text.replace(/mibi(bit|byte)/g, 'mebi$1');

 return(text);
}


//
// math character fixer, originally from User:Omegatron
//
// DO NOT USE ON WHOLE DOCUMENT OR <math> </math> WIKICODE!
//

function FixMath(text) {

// fix basic
 text = FixSpaces(text);

// convert html entities into actual dash characters
 text = text.replace(/&minus;/g, '\u2212');
 text = text.replace(/&middot;/g, '·');

// convert dash next to a number into a minus sign character
 text = text.replace(/([^a-zA-Z0-9\,\_\{])-(\d)/g, '$1\u2212$2');

// changes 2x3 to 2×3
 text = text.replace(/(\d ?)x( ?\d)/g, '$1×$2');

// changes 10^3 to 10<sup>3</sup>
 text = text.replace(/(\d*\.?\d+)\^(\u2212?\d+\.?\d*)/g, '$1<sup>$2</sup>');

// change x^3 to x<sup>3</sup>
 text = text.replace(/([0-9a-zA-Z])\^(\u2212?\d+\.?\d*) /g, '$1<sup>$2</sup>');

// change +/- to ±
 text = text.replace(/( |\d)\+\/(-|\u2212)( |\d)/g, '$1±$3');

 return(text);
}


//
// add a tag to the summary box
//

function AddSummary(summary) {
 var text = document.getElementById('wpSummary');
 if (text.value.match(/ \*\/ $/)) {
 text += ' ';
 }
 else if (text.value != '') {
 text.value += '; ';
 }
 text.value += summary;
}


//
// save undo information
//

function SaveUndo(text, startPos, endPos) {

 if (undoBufferLast == 0) {
 undoBuffer[1] = textareaElement.value;
 undoBufferSelStart[1] = startPos;
 undoBufferSelEnd[1] = endPos;
 undoBufferCurr = 1;
 undoBufferLast = 1;
 }
 undoBufferLast++;
 undoBufferCurr = undoBufferLast;
 var slot = undoBufferLast % undoBufferMax;
 undoBuffer[slot] = text;
 undoBufferSelStart[slot] = startPos;
 undoBufferSelEnd[slot] = endPos;
}


//
//undo
//

function Undo() {

 if (undoBufferCurr - 1 > undoBufferLast - undoBufferMax) {
 if (undoBufferCurr - 1 >= 0) {
 undoBufferCurr--;
 var slot = undoBufferCurr % undoBufferMax;
 textareaElement.value = undoBuffer[slot];
 textareaElement.focus();
 textareaElement.selectionStart = undoBufferSelStart[slot];
 textareaElement.selectionEnd = undoBufferSelEnd[slot];
 textRows.changed = true;
 ParseRows();
 ScrollTextarea(textRows.selStartRow, textRows.selEndRow, 0, findMargin, textareaElement.scrollTop);
 }
 }
}


//
// redo
//

function Redo() {

 if (undoBufferCurr + 1 <= undoBufferLast) {
 undoBufferCurr++;
 var slot = undoBufferCurr % undoBufferMax;
 var slot = undoBufferCurr % undoBufferMax;
 textareaElement.value = undoBuffer[slot];
 textareaElement.focus();
 textareaElement.selectionStart = undoBufferSelStart[slot];
 textareaElement.selectionEnd = undoBufferSelEnd[slot];
 textRows.changed = true;
   ParseRows();
   ScrollTextarea(textRows.selStartRow, textRows.selEndRow, 0, findMargin, textareaElement.scrollTop);
 }
}

//
// resize textarea to ~100% by adapting cols
//

function ResizeTextarea() {

 var textareaClone = document.getElementById('textareaClone');
 var scrollTopPx = textareaElement.scrollTop;
 textareaClone.style.width = '100%';
 textareaClone.style.display = 'block';
 var widthMax = textareaClone.offsetWidth;
 textareaClone.style.width = 'auto';

// find optimal width
 textareaClone.cols = 20;
 for (var i = 64; i >= 1; i = i / 2) {
 while (textareaClone.offsetWidth < widthMax) {
 textareaClone.cols = textareaClone.cols + i;
 }
 textareaClone.cols = textareaClone.cols - i;
 }
 textareaClone.style.display = 'none';
 textareaElement.cols = textareaClone.cols;
 textareaElement.style.width = 'auto';
 textareaElement.scrollTop = scrollTopPx;

// parse rows
 textRows.changed = true;
  ParseRows();

 return;
}


//
// convert strange spaces, remove non-\n linebreak characters
//

function convertStrangeSpaces() {

 var startPos = textareaElement.selectionStart;
 var endPos = textareaElement.selectionEnd;

 var text = textareaElement.value;
 text = text.replace(/[\t\v\u00a0\u2028\u2029]+/g, ' '); // \u00a0 = &nbsp;
 text = text.replace(/[\r\f]/g, '');
 textareaElement.value = text;

 textareaElement.selectionStart = startPos;
 textareaElement.selectionEnd = endPos;

 return;
}


//
// setup routine for javascript editor
//

function SetupEditor() {

 var html = '';

// check if the editor is already installed
 if (document.getElementById('findText') != null) { return; }

// at the moment this works only for mozilla browsers (Mozilla, Mozilla Firefox, Mozilla SeaMonkey)
 var browser = navigator.appName;
 if (browser == null) { return; }
 if (! /Netscape/i.test(browser)) { return; }
 var version = navigator.appVersion.match(/\d+(\.\d+)/)[0];
 if (version == null) { return; }
 if (version < 5.0) { return; }

// get the textarea object
 textareaElement = document.getElementById('wpTextbox1');
 if (textareaElement == null) { return; }

// setup the undo buffers and get the original text for instant change view
 undoBuffer[0] = textareaElement.value;
 editformOrig = textareaElement.value;

// set textarea size to maximal row number, always show vertical scrollbar
  textareaElement.style.overflow = '-moz-scrollbars-vertical';
  textareaElement.style.overflowX = 'auto';

// convert strange spaces, remove non-\n linebreak characters
 convertStrangeSpaces();

// add custom edit area stylesheet definition to head
 var insert = document.getElementsByTagName('head')[0];
 html = '';
 html += '<style type="text/css">';
 html += '.customEdit { ' + styleButtons + '}';
 html += '.previewBox { ' + stylePreviewBox + ' }';
 html += '</style>';
 insert.innerHTML += html;

// create inputWrapper for textarea and buttons (fullscreen elements)
 var inputWrapper = document.createElement('div');
 inputWrapper.id = 'inputWrapper';
 textareaElement.parentNode.insertBefore(inputWrapper, textareaElement);

// move textareaElement to textareaWrapper
 var textareaWrapper = document.createElement('div');
 textareaWrapper.id = 'textareaWrapper';
 inputWrapper.appendChild(textareaWrapper);
 textareaWrapper.appendChild(textareaElement);

// add all other buttons and inputs to buttonsWrapper
 var buttonsWrapper = document.createElement('div');
 buttonsWrapper.id = 'buttonsWrapper';
 inputWrapper.appendChild(buttonsWrapper);

// add custom formatting buttons
 var customEditButtons = document.createElement('div');
 customEditButtons.id ='customEditButtons';
 html = '';

// find, replace
 html += '<div style="margin-top: 0.1em; margin-left: 0;" id="customEditRow1">';
 html += '<input class="customEdit" type="button" value="Get" onclick="javascript:Edit(\'getfind\');" title="Get the find text from the selection">';
 html += '<input class="customEdit" type="button" value="&larr;Find" onclick="javascript:Edit(\'findprev\');" title="Find previous">';
 html += '<span style="position: relative; padding: 0; margin: 0 0.2em;" id="findComboInput">';
 html += '<input class="customEdit" type="text" value="" style="height: 1.4em; font-family: monospace; height: 1.2em; padding: 0; margin: 0; position: absolute; left: 0; top: 0; z-index: 2;" onfocus="javascript:this.setSelectionRange(0, this.textLength);" id="findText" title="">';
 html += '<select class="customEdit" id="findSelect" style="height: 1.5em; font-family: monospace; border: none; padding: 0; margin: 0; position: relative; vertical-align: baseline; z-index: 1;" onfocus="javascript:SetComboOptions(\'find\')" onChange="javascript:ChangeComboInput(\'find\');">';
 html += '</select>';
 html += '</span>';
 html += '<input class="customEdit" type="button" value="Find&rarr;" onclick="javascript:Edit(\'findnext\');" title="Find next">';
 html += '<span style="margin-left: 0.5em;"></span>';
 html += '<input class="customEdit" type="button" value="&uarr;&darr;" onclick="javascript:Edit(\'updown\');" title="Jump to the top / bottom">';
 html += '<input class="customEdit" type="button" value="&crarr;" id="lastChangePos" onclick="javascript:Edit(\'lastchangepos\');" title="Jump to the last changed position">';
  html += '<span style="margin-left: 1em;"></span>';
 html += '<input class="customEdit" type="button" value="&larr;" onclick="javascript:Undo();" title="Undo button clicks">';
 html += '<input class="customEdit" type="button" value="&rarr;" onclick="javascript:Redo();" title="Redo button clicks">';
 html += '<span style="margin-left: 0.5em;"></span>';
 html += '<input class="customEdit" type="button" value="Undo all" onclick="javascript:Edit(\'undoall\');" title="Restore original text, can be undone">';
 html += '<span style="margin-left: 1em;"></span>';
 html += '<input class="customEdit" type="button" style="font-weight: bold;" value="b" onclick="javascript:Edit(\'bold\');" title="Bold text">';
 html += '<input class="customEdit" type="button" style="font-style: italic;" value="i" onclick="javascript:Edit(\'italic\');" title="Italic text">';
 html += '<input class="customEdit" type="button" value="A&rarr;a" onclick="javascript:Edit(\'lowercase\');" title="Lowercase text">';
 html += '<span style="margin-left: 0.5em;"></span>';
 html += '<input class="customEdit" type="button" value="=&larr;" onclick="javascript:Edit(\'headingless\');" title="Decrease heading level of current lines">';
 html += '<input class="customEdit" type="button" value="&rarr;==" onclick="javascript:Edit(\'headingmore\');" title="Increase heading level of current lines">';
 html += '<span style="margin-left: 0.5em;"></span>';
 html += '<input class="customEdit" type="button" value="&prod;" id="scrollToTop" title="Scroll text area to window top">';
 html += '<input class="customEdit" type="button" id="fullScreenButtonFloat" style="display: none; position: absolute; z-index: 5;">';
 html += '<input class="customEdit" type="button" id="fullScreenButton">';
 html += '</div>';

// fixing functions
 html += '<div style="margin-top: 0.2em; margin-bottom: 0.5em; margin-left: 0;" id="customEditRow2">';
 html += '<input class="customEdit" type="button" value="All" onclick="javascript:Edit(\'replaceall\');" title="Replace all occurrences in whole text or selection">';
 html += '<input class="customEdit" type="button" value="&larr;Repl." onclick="javascript:Edit(\'replaceprev\');" title="Replace previous">';
 html += '<span style="position: relative; padding: 0; margin: 0 0.2em;" id="replaceComboInput">';
 html += '<input class="customEdit" type="text" value="" style="height: 1.4em; font-family: monospace; height: 1.2em; padding: 0; margin: 0; position: absolute; left: 0; top: 0; z-index: 2;" onfocus="this.setSelectionRange(0, this.textLength);" id="replaceText" title="">';
 html += '<select class="customEdit" id="replaceSelect" style="height: 1.5em; font-family: monospace; border: none; padding: 0; margin: 0; position: relative; vertical-align: baseline; z-index: 1;" onfocus="SetComboOptions(\'replace\')" onChange="javascript:ChangeComboInput(\'replace\');">';
 html += '</select>';
 html += '</span>';
 html += '<input class="customEdit" type="button" value="Repl.&rarr;" onclick="javascript:Edit(\'replacenext\');" title="Replace">';
 html += '<span title="Find ahead as you type (non-regexp only)"><input class="customEdit" style="margin: 0 0.2em 0 0.5em;" type="checkbox" value="1" id="findAhead">Find ahead</span>';
 html += '<span title="Search should be case sensitive"><input class="customEdit" style="margin: 0 0.2em 0 0.3em;" type="checkbox" value="1" id="caseSensitive">Case</span>';
 html += '<span title="Search should be a regular expression"><input class="customEdit" style="margin: 0 0.2em 0 0.3em;" type="checkbox" value="1" id="regExp">Regexp</span>';
 html += '<span style="margin-left: 1em;">Fix:</span>';
 html += '<input class="customEdit" type="button" value="Basic" onclick="javascript:Edit(\'spaces\');" title="Fix blanks and empty lines">';
 html += '<input class="customEdit" type="button" value="&nbsp;|&nbsp;" onclick="javascript:Edit(\'pipes\');" title="Fix blanks around vertical bars">';
 html += '<input class="customEdit" type="button" value="k&Omega;" onclick="javascript:Edit(\'units\');" title="Fix units">';
 html += '<input class="customEdit" type="button" value="&radic;" onclick="javascript:Edit(\'math\');" title="Fix math, DO NOT USE ON WHOLE TEXT OR <math></math> WIKICODE!!!">';
  html += '<span style="margin-left: 0.5em;"></span>';
 html += '<input class="customEdit" type="button" value="&mdash;" onclick="javascript:Edit(\'dashes\');" title="Fix dashes">';
 html += '<input class="customEdit" type="button" value="html" onclick="javascript:Edit(\'html\');" title="Fix html to wikicode">';
 html += '<input class="customEdit" type="button" value=".,:" onclick="javascript:Edit(\'punct\');" title="Fix spaces before puntuation">';
 html += '<input class="customEdit" type="button" value="Aa" onclick="javascript:Edit(\'caps\');" title="Fix caps in headers and lists">';
 html += '</div>';
 customEditButtons.innerHTML = html;
 buttonsWrapper.appendChild(customEditButtons);

// add elements to buttonsWrapper
 var element = document.getElementById('editpage-copywarn');
 while (element != null) {
 if (element.id == 'editpage-specialchars') {
 break;
 }
 next_element = element.nextSibling;
 buttonsWrapper.appendChild(element);
 element = next_element;
 }

// add preview and changes buttons
 var customPreview = document.createElement('span');
 customPreview.id = 'customPreviewButtons';
 html = '';
 html += '<span style="margin-left: 0.5em; margin-right: 0.5em">';
 html += 'Instant:\n';
  html += '<input type="button" class="customEdit" title="Show a preview below" value="Preview" id="instantPreview" onclick="NormalScreen(); document.getElementById(\'PreviewBox\').innerHTML = wiki2html(editform.wpTextbox1.value);">';
 html += '<input type="button" class="customEdit" title="Show changes since your last preview below" value="Changes" id="instantDiff" onclick="NormalScreen(); document.getElementById(\'PreviewBox\').innerHTML = StringDiff(editformOrig, editform.wpTextbox1.value);">';
 html += '<input type="button" class="customEdit" title="Clear the preview box" value="Clear" id="instantClear" onclick="NormalScreen(); document.getElementById(\'PreviewBox\').innerHTML = \'\';">';
 html += '</span>';
 html += 'Server:\n';
 customPreview.innerHTML = html;
 var preview = document.getElementById('wpPreview');
 preview.parentNode.insertBefore(customPreview, preview);

// add preview box
 var previewBox = document.createElement('div');
 previewBox.id = 'customPreviewBox';
 html = '';
 html += '<div style="margin-top: 0.5em; margin-bottom: 0.5em; border-width: 1px; border-style: solid; border-color: #808080 #d0d0d0 #d0d0d0 #808080;" id="PreviewBoxOutline">';
 html += '<div class="previewBox" style="padding: 5px; border-width: 1px; border-style: solid; border-color: #404040 #ffffff #ffffff #404040;" id="PreviewBox">';
 html += '</div>';
 html += '</div>';
 html += '<input class="customEdit" type="button" value="Scroll up" id="scrollToTopBottom" title="Scroll text area to window top">';
 previewBox.innerHTML = html;
 inputWrapper.parentNode.insertBefore(previewBox, inputWrapper.nextSibling);

// move linebreak before checkboxes down
 var summary = document.getElementById('wpSummary');
 var checkboxSep = document.createTextNode('');
 summary.parentNode.replaceChild(checkboxSep, summary.nextSibling);

// move 'Summary:' into submit button div
 var summary = document.getElementById('wpSummary');
 var summaryLabel = document.getElementById('wpSummaryLabel');
 summary.parentNode.insertBefore(summaryLabel, summary.parentNode.firstChild);

// make the summary a combo box
 var summary = document.getElementById('wpSummary');
 var htmlPre = '';
 var htmlPost = '';
 html = '';
 htmlPre  += ' <span style="position: relative;" id="summaryComboInput">';
 html     += ' style="padding: 0; margin: 0; position: absolute; left: 0; top: 0; z-index: 2; width: auto;" onfocus="this.setSelectionRange(0, this.textLength);"';
 htmlPost += '<select style="border: none; padding: 0; margin: 0; position: relative; vertical-align: middle; z-index: 1;" id="wpSummarySelect" onfocus="javascript:SetComboOptions(\'summary\')" onchange="javascript:ChangeComboInput(\'summary\');">';
 htmlPost += '</select>';
 htmlPost += '</span>';
 summary.parentNode.innerHTML = summary.parentNode.innerHTML.replace(/\s*(<input.*?id\=\"wpSummary\")(.*?>)/, htmlPre + '$1' + html + '$2' + htmlPost);

// add margin around submit buttons
 var saveButton = document.getElementById('wpSave');
 saveButton.parentNode.style.marginTop = '0.7em';
 saveButton.parentNode.style.marginBottom = '0.5em';

// move copywarn down
 var copywarn = document.getElementById('editpage-copywarn');
 inputWrapper.parentNode.insertBefore(copywarn, previewBox.nextSibling);

// shorten submit button texts and add onclick handler
 document.getElementById('wpPreview').value = 'Preview';
 document.getElementById('wpDiff').value = 'Changes';
 window.onsubmit = function() {
 AddToHistory('summary');
 };

// set up combo input boxes with history
 fieldHist ['find'] = [];
 cookieName['find'] = 'findHistory';
 inputElement['find'] = new Object(document.getElementById('findText'));
 selectElement['find'] = new Object(document.getElementById('findSelect'));
 selectElement['find'].style.height = (inputElement['find'].clientHeight + 1) +'px';

 fieldHist ['replace'] = [];
 cookieName['replace'] = 'replaceHistory';
 inputElement['replace'] = new Object(document.getElementById('replaceText'));
 selectElement['replace'] = new Object(document.getElementById('replaceSelect'));
 selectElement['replace'].style.height = (inputElement['replace'].clientHeight + 1) +'px';

 fieldHist ['summary'] = [];
 cookieName['summary'] = 'summaryHistory';
 inputElement['summary'] = new Object(document.getElementById('wpSummary'));
 selectElement['summary'] = new Object(document.getElementById('wpSummarySelect'));
 selectElement['summary'].style.height = (inputElement['summary'].clientHeight + 1) +'px';

 ResizeComboInput('find');
 ResizeComboInput('replace');
 ResizeComboInput('summary');

// setup fullscreen mode

// save textbox properties
 normalTextareaWidth = getStyle(textareaElement, 'width');
 normalTextareaHeight = getStyle(textareaElement, 'height');
 normalTextareaMargin = getStyle(textareaElement, 'margin');
 normalTextareaRows = textareaElement.rows;

// set fullscreen style fixes
 var inputWrapper = document.getElementById('inputWrapper');
 var content = document.getElementById('content');
 var content = document.getElementById('content');
 inputWrapper.style.lineHeight = getStyle(content, 'line-height');

// move globalWrapper elements to new subGlobalWrapper
 var globalWrapper = document.getElementById('globalWrapper');
 var subGlobalWrapper = document.createElement('div');
 subGlobalWrapper.id = 'subGlobalWrapper';
 globalWrapper.appendChild(subGlobalWrapper);
 var element = globalWrapper.firstChild;
 while (element != null) {
 if (element.id == 'subGlobalWrapper') {
 break;
 }
 next_element = element.nextSibling;
 subGlobalWrapper.appendChild(element);
 element = next_element;
 }

// set original tree position of input area
 normalTreePos = inputWrapper.nextSibling;

// set fullscreen button texts
 var fullScreenButton = document.getElementById('fullScreenButton');
 var floatButton = document.getElementById('fullScreenButtonFloat');
 fullScreenButton.value = fullButtonValue;
 fullScreenButton.title = fullButtonTitle;
 floatButton.value = normalFloatButtonValue;
 floatButton.title = normalButtonTitle;

// set button event handlers
 document.captureEvents(Event.click);
 document.captureEvents(Event.mouseover);
 document.captureEvents(Event.keyup);
 document.captureEvents(Event.keypress);

// fullscreen
 fullScreenButton.onclick = FullScreen;
 floatButton.onclick = NormalScreen;
 floatButton.onblur = function() {
 floatButton.style.right = '0.5em';
 floatButton.style.bottom = '0.5em';
 floatButton.style.top = '';
 floatButton.style.left = '';
 };

// scroll to text area top
 var scrollToTop = document.getElementById('scrollToTop');
 var scrollToTopBottom = document.getElementById('scrollToTopBottom');
 scrollToTop.onmouseover = ScrollToTop;
 scrollToTop.onclick = ScrollToTop;
 scrollToTopBottom.onmouseover = ScrollToTop;
 scrollToTopBottom.onclick = ScrollToTop;

// find ahead
 var findText = document.getElementById('findText');
 findText.onkeyup = FindAhead;

// cursor memory, jump to last changed position
 textareaElement.onkeypress = KeyTextArea;
 textareaElement.onkeyup = KeyTextArea;
 textareaElement.onclick = ClickTextArea;

// submit buttons
 var saveButton = document.getElementById('wpSave');
 var previewButton = document.getElementById('wpPreview');
 var diffButton = document.getElementById('wpDiff');
 saveButton.onclick = function() { NormalScreen(); saveButton.onclick = null; saveButton.click(); };
 previewButton.onclick = function() { NormalScreen(); previewButton.onclick = null; previewButton.click(); };
 diffButton.onclick = function() { NormalScreen(); diffButton.onclick = null; diffButton.click(); };

// insert an invisible clone of the textarea for resizing
  var textareaClone = textareaElement.cloneNode(false);
  textareaClone.id = 'textareaClone';
  textareaClone.name = null;
  textareaClone.accesskey = null
  textareaClone.tabindex = null;
 textareaClone.style.position = 'relative';
  textareaClone.style.display = 'none';
 textareaClone.style.zIndex = '-5';
 textareaClone.style.height = '';
 textareaClone.rows = 1;
  textareaClone.style.overflow = 'scroll';
  textareaElement.parentNode.insertBefore(textareaClone, textareaElement.nextSibling);

// resize textarea and parse rows
 window.onresize = ResizeTextarea;
 ResizeTextarea();

// set textarea cursor to start
 textareaElement.setSelectionRange(0, 0);

// default checkboxes
  if (findAheadSelected) {
    document.getElementById('findAhead').checked = true;
  }

 return;
}


//
// FindAhead: find non-regexp text as you type, event handler for find field
//

function FindAhead() {

  if (document.getElementById('findAhead').checked) {
    if (!document.getElementById('regExp').checked) {

// get the find text
 var find = document.getElementById('findText');
 var findText = find.value;

// get checkboxes
 var caseSensitive = document.getElementById('caseSensitive');
 var regExp = document.getElementById('regExp');

// replace special characters for regexp search
 var startPos = textareaElement.selectionStart;
 findText = findText.replace(/([\\^\$\*\+\?\.\(\)\[\]\{\}\:\=\!\|\,\-])/g, '\\$1');
 if ( ! caseSensitive.checked ) {
 regExpFlags = 'i';
 }
 if (findText != '') {

// create regexp
 var regExpFind = new RegExp(findText, regExpFlags);

// set start position for search to right
 var indexStart;
 var result;
 indexStart = startPos;

// execute the regexp search to the right
 regExpFind.lastIndex = indexStart;
 result = regExpFind.exec(textareaElement.value);

// set the selection
 if (result != null) {

// set the selection range
 textareaElement.setSelectionRange(result.index, result.index + result[0].length);

// scroll the textarea to the selected text or cursor position
 ParseRows();
 if (textRows.selStartRow >= textRows.rows) {
   ScrollTextarea(textRows.selStartRow, textRows.selEndRow, 0, 0, 0);
 }
 else {
   ScrollTextarea(textRows.selStartRow, textRows.selEndRow, 0, 0, textareaElement.scrollHeight);
 }
 }
 }
 }
 }
 return;
}


//
// ClickTextArea: event handler for textarea clicks
//

function ClickTextArea(event) {

// reset cursor memory
  textRows.cursorMemory = null;
 return;
}


//
// KeyTextArea: event handler for textarea keypresses
//

function KeyTextArea(event) {

// 'jump to last change' function
 if (event.type == 'keyup') {

// left, right, up, down, page up, page down;
 switch (event.keyCode) {
 case 37: ; case 39: ; case 38: ; case 33: ; case 40: ; case 34: break;
 default:
 if (event.charCode != null) {
 lastChangePos = textareaElement.selectionStart;
 }
   }
  }

// cursor memory function
 else if (event.type == 'keypress') {

// check if cursor memory has been enabled
 if (cursorMemory != true) {
 return;
 }

// left, right
 if ( (event.keyCode == 37) || (event.keyCode == 39) ) {
 textRows.cursorMemory = null;
 }

// up, down, page up, page down; contains a workaround for a bug that misplaces cusor in empty lines
 else if ( (event.keyCode == 38) || (event.keyCode == 40) || (event.keyCode == 33) || (event.keyCode == 34) ) {
 ParseRows();
 var row = textRows.selStartRow;
 var col;
 if (textRows.cursorMemory != null) {
 col = textRows.cursorMemory;
 }
 else {
 col = textRows.selEnd - textRows.rowStart[row];
 textRows.cursorMemory = col;
 }
 var lines;

// up, down, page up, page down
 switch (event.keyCode) {
 case 38: lines = -1; break;
 case 33: lines = scrollMargin - textRows.rows; break;
 case 40: lines = 1; break;
 case 34: lines = textRows.rows - scrollMargin;
 }
 if ( ( (lines < 0) && (row > 0) ) || ( (lines > 0) && (row < textRows.rowTotal) ) ) {
 row = row + lines;
 if (row < 0) {
 row = 0;
 }
 else if (row > textRows.rowTotal) {
 row = textRows.rowTotal;
 }
 var pos;
 if (textRows.rowLength[row] >= col) {
 pos = textRows.rowStart[row] + col;
 if (!event.metaKey && !event.shiftKey && !event.ctrlKey) {
 textareaElement.setSelectionRange(pos, pos);
 event.preventDefault();
 }
 }
 else {
 pos = textRows.rowStart[row] + textRows.rowLength[row];
 }
 ScrollTextarea(textRows.selStartRow, textRows.selEndRow, lines, scrollMargin, textareaElement.scrollTop);
 }
 }
 else {
 textRows.changed = true;
 }
 }
 return;
}


//
// ScrollToTop: event handler for scroll to textarea top button
//

function ScrollToTop(event) {

 var scrollToTop = document.getElementById('scrollToTop');
 var scrollToTopBottom = document.getElementById('scrollToTopBottom');
 var textarea = document.getElementById('textareaWrapper');
 var buttons = document.getElementById('buttonsWrapper');
 var textareaTop = getOffsetTop(textarea);
 var buttonsTop = getOffsetTop(buttons);
 var offset = window.pageYOffset;

// click
 if (event.type == 'click') {
 if (offset == textareaTop) {
   window.scroll(0, buttonsTop);
 scrollToTop.title = "Scroll text area to window top";
 scrollToTopBottom.title = "Scroll text area to window top";
 }
 else {
 window.scroll(0, textareaTop);
 scrollToTop.title = "Scroll button area to window top";
 scrollToTopBottom.title = "Scroll button area to window top";
 }
 }

// mouseover
 else {
 if (offset == textareaTop) {
 scrollToTop.title = "Scroll button area to window top";
 scrollToTopBottom.title = "Scroll button area to window top";
 }
 else {
 scrollToTop.title = "Scroll text area to window top";
 scrollToTopBottom.title = "Scroll text area to window top";
 }
 }
 return;
}



//
// FullScreen: change to fullscreen input area; event handler for fullscreen buttons
//

function FullScreen(event) {

 fullScreenMode = true;

// save window scroll position
 normalPageYOffset = window.pageYOffset;
 normalPageXOffset = window.pageXOffset;

// get fullscreen button coordinates
 var buttonOffsetLeft = event.pageX - window.pageXOffset;
 var buttonOffsetTop = event.pageY - window.pageYOffset;

// move the input area up in the tree
 var inputWrapper = document.getElementById('inputWrapper');
 var globalWrapper = document.getElementById('globalWrapper');
 var subGlobalWrapper = document.getElementById('subGlobalWrapper');
 globalWrapper.insertBefore(inputWrapper, subGlobalWrapper);

// set input area to fullscreen
 inputWrapper.style.position = 'fixed';
 inputWrapper.style.top = '0';
 inputWrapper.style.left = '0';
 inputWrapper.style.right = '0';
 inputWrapper.style.bottom = '0';
 var content = document.getElementById('content');
 inputWrapper.style.backgroundColor = getStyle(content, 'background-color');
 var buttonsWrapper = document.getElementById('buttonsWrapper');
 buttonsWrapper.style.paddingLeft = '0.5em'
 buttonsWrapper.style.paddingBottom = '0.5em'

// set textarea size
 textareaElement.style.margin = '0';

// set the textarea to maximal height
 var textareaWrapper = document.getElementById('textareaWrapper');
 textareaElement.style.height = (window.innerHeight - buttonsWrapper.offsetHeight - 4) + 'px';

// hide the rest of the page
 subGlobalWrapper.style.display = 'none';

// set floating 'back to normal' button
 var floatButton = document.getElementById('fullScreenButtonFloat');
 floatButton.style.right = '';
 floatButton.style.bottomt = '';
 floatButton.style.display = 'inline';
 floatButton.style.left = (buttonOffsetLeft - floatButton.offsetWidth / 2) + 'px';
 floatButton.style.top = (buttonOffsetTop - floatButton.offsetHeight / 2) + 'px';
 floatButton.focus();

// change fullscreen button text and handler
 var fullScreenButton = document.getElementById('fullScreenButton');
 fullScreenButton.value = normalButtonValue;
 fullScreenButton.title = normalButtonTitle;
 fullScreenButton.onclick = NormalScreen;

// set rows
 var textareaClone = document.getElementById('textareaClone');
 textareaClone.style.display = 'block';
  var rows = textareaElement.clientHeight / textareaClone.clientHeight * textareaClone.rows;
 textareaClone.style.display = 'none';
 textareaElement.rows = rows;

// resize textarea to defined cols number and parse rows
 ResizeTextarea();

 return;
}


//
// NormalScreen: change back to normal page view; event handler for fulscreen buttons
//

function NormalScreen() {

// check if we are in fullscreen mode
 if (fullScreenMode != true) {
 return;
 }
 fullScreenMode = false;

// hide floating 'back to normal' button
 var floatButton = document.getElementById('fullScreenButtonFloat').style.display = 'none';

// show the rest of the page
 document.getElementById('subGlobalWrapper').style.display = 'block';

// set input area back to the original position
 var inputWrapper = document.getElementById('inputWrapper');
 normalTreePos.parentNode.insertBefore(inputWrapper, normalTreePos);
 inputWrapper.style.position = 'static';
 inputWrapper.style.height = '';
 inputWrapper.style.backgroundColor = '';

// reset textarea settings
 textareaElement.style.width = normalTextareaWidth;
 textareaElement.style.height = normalTextareaHeight;
 textareaElement.style.margin = normalTextareaMargin;
 textareaElement.rows = normalTextareaRows;
 document.getElementById('buttonsWrapper').style.padding = '';

// change fullscreen button text and handler
 var fullScreenButton = document.getElementById('fullScreenButton');
 fullScreenButton.value = fullButtonValue;
 fullScreenButton.title = fullButtonTitle;
 fullScreenButton.onclick = FullScreen;

// reset window scroll position
 window.scrollTo(normalPageXOffset, normalPageYOffset);

// resize textarea to defined cols number
 ResizeTextarea();

 return;
}


//
// ResizeComboInput: set the size of the background select boxes so that the button is visible
//

function ResizeComboInput(field) {

// add a dummy option
 var dummy;
 if (selectElement[field].options.length == 0) {
 selectElement[field].options[0] = new Option('');
 dummy = true;
 }

// set option widths to 0
 for (i = 0; i < selectElement[field].options.length; i ++) {
 selectElement[field].options[i].style.width = '0';
 }

// calculate select width
 var inputWidth = inputElement[field].clientWidth;
 var selectWidth = selectElement[field].clientWidth;
 var optionWidth = selectElement[field].options[0].offsetWidth;
 var border = inputElement[field].offsetWidth - inputElement[field].clientWidth;
 selectElement[field].style.width = (selectWidth - optionWidth + inputWidth - border) + 'px';

// delete dummy option
 if (dummy) {
 selectElement[field].options[0] = null;
 }

// set option widths to auto
 for (i = 0; i < selectElement[field].options.length; i ++) {
 selectElement[field].options[i].style.width = 'auto';
 }
 return;
}


//
// ChangeComboInput: set the input value to selected option; onchange event handler for select boxes
//

function ChangeComboInput(field) {

// get selection index (-1 for unselected)
 var selected = selectElement[field].selectedIndex;
 if (selected >= 0) {

// get selected option
 var option = selectElement[field].options[selected];
 if (option.text != '') {

// add case and regexp checkboxes to find / replace fields
 if (option.value == 'setcheck') {
 document.getElementById('caseSensitive').checked
 = ( option.text.charAt(0) == checkMarker[true] );
 document.getElementById('regExp').checked
 = ( option.text.charAt(1) == checkMarker[true] );
 inputElement[field].value = option.text.substr(3);
 }
 else {
 inputElement[field].value = option.text;
 }
 }
 }
 return;
}


//
// AddToHistory: add an input value to the cookie history
//

function AddToHistory(field) {

 if (inputElement[field].value != '') {

// load history from cookie
 LoadHistoryFromCookie(field);

// add current value to history
 fieldHist[field].unshift(inputElement[field].value);

// add case and regexp checkboxes to find / replace value
 if ( (field == 'find') || (field == 'replace') ) {
 fieldHist[field][0] =
 checkMarker[ document.getElementById('caseSensitive').checked ] +
 checkMarker[ document.getElementById('regExp').checked ] +
 ' ' + fieldHist[field][0];
 }

// remove multiple old copies from history
 i = 1;
 while (i < fieldHist[field].length) {
 if (fieldHist[field][i] == fieldHist[field][0]) {
 fieldHist[field].splice(i, 1);
 }
 else {
 i ++;
 }
 }

// remove new value if it is a preset value
 i = 0;
 if (presetOptions[field] != null) {
 while (i < presetOptions[field].length) {
 if (presetOptions[field][i] == fieldHist[field][0]) {
 fieldHist[field].shift;
 break;
 }
 else {
 i ++;
 }
 }
 }

// cut history to maximal history length
 fieldHist[field] = fieldHist[field].slice(0, findHistoryLength);

// saved history to cookie
 SaveHistoryToCookie(field);
 }
 return;
}


//
// SetComboOptions: generate the select options from cookie history; onfocus handler for select box
//

function SetComboOptions(field) {

// load history from cookie
 LoadHistoryFromCookie(field);

 var option = {};
 var selected = null;
 j = 0;

// delete options
 var options = selectElement[field].options;
 for (i = 0; i > options.length; i ++) {
 selectElement[field].remove(i);
 }

// delete optgroup
 option = document.getElementById(field + 'Optgroup');
 if (option != null) {
 selectElement[field].removeChild(option);
 }

// workaround for onchange not firing when selecting first option from unselected dropdown
 option = document.createElement('option');
 option.style.display = 'none';
 selectElement[field].options[j++] = option;

// add history entries
 for (i = 0; i < fieldHist[field].length; i ++) {
 if (fieldHist[field][i] != null) {
 if (fieldHist[field][i] == inputElement[field].value) {
 selected = j;
 }
 option = document.createElement('option');
 option.text = fieldHist[field][i];
 if ( (field == 'find') || (field == 'replace') ) {
 option.value = 'setcheck';
 }
 selectElement[field].options[j++] = option;
 }
 }

// add preset entries
 if (presetOptions[field] != null) {
 var startPreset = j;
 for (i = 0; i < presetOptions[field].length; i ++) {
 if (presetOptions[field][i] != null) {
 if (presetOptions[field][i] == inputElement[field].value) {
 selected = j;
 }
 option = document.createElement('option');
 option.text = presetOptions[field][i];
 selectElement[field].options[j++] = option;
 }
 }

// add a blank separator
 if (startPreset > 1) {
 option = document.createElement('optgroup');
 option.label = '\u00a0';
 option.id = field + 'Optgroup';
 selectElement[field].insertBefore(option, selectElement[field].options[startPreset]);
 }
 }

// set the selection
 selectElement[field].selectedIndex = selected;
 return;
}


//
// LoadHistoryFromCookie: get the input box history from the respective cookie
//

function LoadHistoryFromCookie(field) {
 var cookie = GetCookie(cookieName[field]);
 if (cookie != null) {
 cookie = decodeURIComponent(cookie);
 fieldHist[field] = cookie.split('\n');
 }
 return;
}


//
// SaveHistoryToCookie: save the input box history to the respective cookie
//

function SaveHistoryToCookie(field) {
 var cookieExpire = new Date();
 cookieExpire.setTime( cookieExpire.getTime() + cookieExpireSec * 1000 );
 var cookie = '';
 cookie = fieldHist[field].join('\n')
 cookie = encodeURIComponent(cookie);
 SetCookie(cookieName[field], cookie, cookieExpire.toGMTString());
 return;
}


// getStyle: get style properties for non-inline css definitions
function getStyle(element, styleProperty) {
 var style;
 if (element != null) {
 style = document.defaultView.getComputedStyle(element, null).getPropertyValue(styleProperty);
 }
 return(style);
}


//
// GetCookie
//

function GetCookie(name) {
 var cookie = ' ' + document.cookie;
 var search = ' ' + name + '=';
 var setStr = null;
 var offset = 0;
 var end = 0;
 if (cookie.length > 0) {
 offset = cookie.indexOf(search);
 if (offset != -1) {
 offset += search.length;
 end = cookie.indexOf(';', offset)
 if (end == -1) {
 end = cookie.length;
 }
 setStr = cookie.substring(offset, end);
 setStr = setStr.replace(/\\+/g, ' ');
 setStr = decodeURIComponent(setStr);
 }
 }
 return(setStr);
}


//
// SetCookie
//

function SetCookie(name, value, expires, path, domain, secure) {
 document.cookie = name + '=' + encodeURIComponent(value) +
 ((expires) ? '; expires=' + expires : '') +
 ((path)    ? '; path=' + path : '') +
 ((domain)  ? '; domain=' + domain : '') +
 ((secure)  ? '; secure' : '');
}

//
// getOffsetTop: get element offset relative to left window border
//

function getOffsetTop(element) {
 var offset = 0;
 do {
 offset += element.offsetTop;
 } while ( (element = element.offsetParent) != null );
 return(offset);
}


/* </nowiki></pre> */