function com_stewartspeak_replacement() {
/*
	Dynamic Heading Generator
    By Stewart Rosenberger
    http://www.stewartspeak.com/headings/

	This script searches through a web page for specific or general elements
	and replaces them with dynamically generated images, in conjunction with
	a server-side script.

	(Not the original script, modified version)
*/

var testURL = "modules/system/images/spacer.gif";
var doNotPrintImages = false;
var printerCSS = "replacement-print.css";
var hideFlicker = false;
var hideFlickerCSS = "replacement-screen.css";
var hideFlickerTimeout = 1000;

/* ---------------------------------------------------------------------------
    For basic usage, you should not need to edit anything below this comment.
    If you need to further customize this script's abilities, make sure
	you're familiar with Javascript. And grab a soda or something.
*/

var items;
var imageLoaded = false;
var documentLoaded = false;

function replaceSelector(selector,url,wordwrap)
{
	if(typeof items == "undefined")
		items = new Array();

	items[items.length] = {selector: selector, url: url, wordwrap: wordwrap};
}

if(hideFlicker)
{
	document.write('<link id="hide-flicker" rel="stylesheet" media="screen" href="' + hideFlickerCSS + '" />');
	window.flickerCheck = function()
	{
		if(!imageLoaded)
			setStyleSheetState('hide-flicker',false);
	};
	setTimeout('window.flickerCheck();',hideFlickerTimeout)
}

if(doNotPrintImages)
	document.write('<link id="print-text" rel="stylesheet" media="print" href="' + printerCSS + '" />');

var test = new Image();
test.onload = function() { imageLoaded = true; if(documentLoaded) replacement(); };
test.src = testURL + "?date=" + (new Date()).getTime();

addLoadHandler(function(){ documentLoaded = true; if(imageLoaded) replacement(); });


function documentLoad()
{
	documentLoaded = true;
	if(imageLoaded)
		replacement();
}

function getCssClass(pClassName) {
	var temp = document.getElementsByTagName("link");
	var ret = null;
	if(temp.length > 0) for(i=0; i<temp.length; i++) {
		var el = temp.item(i);
		if(!el) continue;
		var sheet = null;
		if(el.styleSheet) sheet = el.styleSheet;
		if(el.sheet) sheet = el.sheet;
		if(sheet) {
			var rules = null;
			if(sheet.rules) rules = sheet.rules;
			if(sheet.cssRules) rules = sheet.cssRules;
			if(rules) {
				for(index in rules) {
					if(rules[index].selectorText == pClassName) {
						ret = rules[index].style;
						break;
					}
				}
			}
		}
	}
	return ret;
}

function replacement()
{
	for(i in replacements) {
		replaceSelector(replacements[i],"index.php?action=heading",false);
	}

	if(!items) return;

	for(var i=0;i<items.length;i++)
	{
		var elements = getElementsBySelector(items[i].selector);
		if(elements.length > 0) for(var j=0;j<elements.length;j++)
		{
			if(!elements[j]) continue ;

			var itemClass = getCssClass(items[i].selector);

			var styleColor = itemClass.color;
			if( styleColor.substr(0,4) == "rgb(" ) {
				// mozilla gives the color as rgb(xxx,xxx,xxx)
				styleColor = styleColor.replace(/\s/gi,'');
				var r = styleColor.replace(/rgb\((\d*),\d*,\d*\)/,'$1');
				var g = styleColor.replace(/rgb\(\d*,(\d*),\d*\)/,'$1');
				var b = styleColor.replace(/rgb\(\d*,\d*,(\d*)\)/,'$1');
				styleColor = "#"+decToHex(r,2)+decToHex(g,2)+decToHex(b,2);
			}
			var styleBgColor = itemClass.backgroundColor;
			if( styleBgColor.substr(0,4) == "rgb(" ) {
				// mozilla gives the color as rgb(xxx,xxx,xxx)
				styleBgColor = styleBgColor.replace(/\s/gi,'');
				var r = styleBgColor.replace(/rgb\((\d*),\d*,\d*\)/,'$1');
				var g = styleBgColor.replace(/rgb\(\d*,(\d*),\d*\)/,'$1');
				var b = styleBgColor.replace(/rgb\(\d*,\d*,(\d*)\)/,'$1');
				styleBgColor = "#"+decToHex(r,2)+decToHex(g,2)+decToHex(b,2);
			}

			var styleSize = itemClass.fontSize;
			var styleWeight = itemClass.fontWeight;
			var styleFont = itemClass.fontFamily;
			styleColor=styleColor.replace(/[^a-fA-F0-9]/gi, '', styleColor);
			styleBgColor=styleBgColor.replace(/[^a-fA-F0-9]/gi, '', styleBgColor);
			styleSize=styleSize.replace(/[^0-9]/gi, '', styleSize);

			var text = extractText(elements[j]);
    		while(elements[j].hasChildNodes())
				elements[j].removeChild(elements[j].firstChild);

			var tokens = items[i].wordwrap ? text.split(' ') : [text];
			for(var k=0;k<tokens.length;k++)
			{
				var url = items[i].url + "&heading-text="+escape(tokens[k]+' ')+"&selector="+escape(items[i].selector);
				url += "&heading-color="+styleColor;
				url += "&heading-bgcolor="+styleBgColor;
				url += "&heading-size="+styleSize;
				url += "&heading-font="+styleFont;
				url += "&heading-weight="+styleWeight;
				var image = document.createElement("img");
				image.className = "replacement";
				image.alt = tokens[k] ;
				image.src = url;
				image.removeAttribute("width");
				image.removeAttribute("height");
				image.setAttribute("border","0");
				image.style.backgroundColor = "";
				elements[j].appendChild(image);
			}
			elements[j].style.backgroundColor = "transparent";

			if(doNotPrintImages)
			{
				var span = document.createElement("span");
				span.style.display = 'none';
				span.className = "print-text";
				span.appendChild(document.createTextNode(text));
				elements[j].appendChild(span);
			}
		}
	}

	if(hideFlicker)
		setStyleSheetState('hide-flicker',false);
}

function addLoadHandler(handler)
{
	if(window.addEventListener)
	{
		window.addEventListener("load",handler,false);
	}
	else if(window.attachEvent)
	{
		window.attachEvent("onload",handler);
	}
	else if(window.onload)
	{
		var oldHandler = window.onload;
		window.onload = function piggyback()
		{
			oldHandler();
			handler();
		};
	}
	else
	{
		window.onload = handler;
	}
}

function setStyleSheetState(id,enabled)
{
	var sheet = document.getElementById(id);
	if(sheet)
		sheet.disabled = (!enabled);
}

function extractText(element)
{
	if(typeof element == "string")
		return element;
	else if(typeof element == "undefined")
		return element;
	else if(element.innerText)
		return element.innerText;

	var text = "";
	var kids = element.childNodes;
	for(var i=0;i<kids.length;i++)
	{
		if(kids[i].nodeType == 1)
		text += extractText(kids[i]);
		else if(kids[i].nodeType == 3)
		text += kids[i].nodeValue;
	}

	return text;
}

/*
	Finds elements on page that match a given CSS selector rule. Some
	complicated rules are not compatible.
	Based on Simon Willison's excellent "getElementsBySelector" function.
	Original code (with comments and description):
		http://simon.incutio.com/archive/2003/03/25/getElementsBySelector
*/
function getElementsBySelector(selector)
{
	var tokens = selector.split(' ');
	var currentContext = new Array(document);
	for(var i=0;i<tokens.length;i++)
	{
		token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');
		if(token.indexOf('#') > -1)
		{
			var bits = token.split('#');
			var tagName = bits[0];
			var id = bits[1];
			var element = document.getElementById(id);
			if(tagName && element.nodeName.toLowerCase() != tagName)
				return new Array();
			currentContext = new Array(element);
			continue;
		}

		if(token.indexOf('.') > -1)
		{
			var bits = token.split('.');
			var tagName = bits[0];
			var className = bits[1];
			if(!tagName)
				tagName = '*';

			var found = new Array;
			var foundCount = 0;
			for(var h=0;h<currentContext.length;h++)
			{
				var elements;
				if(tagName == '*')
					elements = currentContext[h].all ? currentContext[h].all : currentContext[h].getElementsByTagName('*');
				else
					elements = currentContext[h].getElementsByTagName(tagName);

				for(var j=0;j<elements.length;j++)
					found[foundCount++] = elements[j];
			}

			currentContext = new Array;
			var currentContextIndex = 0;
			for(var k=0;k<found.length;k++)
			{
				if(found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b')))
					currentContext[currentContextIndex++] = found[k];
			}

			continue;
	    }

		if(token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/))
		{
			var tagName = RegExp.$1;
			var attrName = RegExp.$2;
			var attrOperator = RegExp.$3;
			var attrValue = RegExp.$4;
			if(!tagName)
				tagName = '*';

			var found = new Array;
			var foundCount = 0;
			for(var h=0;h<currentContext.length;h++)
			{
				var elements;
	        	if(tagName == '*')
					elements = currentContext[h].all ? currentContext[h].all : currentContext[h].getElementsByTagName('*');
				else
					elements = currentContext[h].getElementsByTagName(tagName);

				for(var j=0;j<elements.length;j++)
					found[foundCount++] = elements[j];
			}

			currentContext = new Array;
			var currentContextIndex = 0;
			var checkFunction;
			switch(attrOperator)
			{
				case '=':
					checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
					break;
				case '~':
					checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
					break;
				case '|':
					checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
					break;
				case '^':
					checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
					break;
				case '$':
					checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
					break;
				case '*':
					checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
					break;
				default :
					checkFunction = function(e) { return e.getAttribute(attrName); };
			}

			currentContext = new Array;
			var currentContextIndex = 0;
			for(var k=0;k<found.length;k++)
			{
				if(checkFunction(found[k]))
					currentContext[currentContextIndex++] = found[k];
			}

			continue;
		}

		tagName = token;
		var found = new Array;
		var foundCount = 0;
		for(var h=0;h<currentContext.length;h++)
		{
			var elements = currentContext[h].getElementsByTagName(tagName);
			for(var j=0;j<elements.length; j++)
				found[foundCount++] = elements[j];
		}

		currentContext = found;
	}

	return currentContext;
}


}// end of scope, execute code
if(document.createElement && document.getElementsByTagName && !navigator.userAgent.match(/opera\/?6/i))
	com_stewartspeak_replacement();