//replaceSelector("h1","h1.php",true);
replaceSelector("h2","trep",true);
var testURL = "test.png";

var doNotPrintImages = false;
var printerCSS = "/user/css/replacement-print.css";

var hideFlicker = false;
var hideFlickerCSS = "/user/css/replacement-screen.css";
var hideFlickerTimeout = 3000;



var items;
var imageLoaded = false;
var documentLoaded = false;
var escapeText = (typeof(encodeURIComponent) != 'undefined') ? encodeURIComponent : function(text){ return escape(text).replace(/\+/g,'%2B'); } ;

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 + '" />');



function replacement()
{
if (can_go!=1)
	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 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 + "?text="+escapeText(tokens[k]+' ')+"&selector="+escapeText(items[i].selector);
//				alert(tokens[k]+':'+escapeText(tokens[k]));
				var url = '/i/'+ items[i].url+ '/jst/'+escapeText(tokens[k]+' ')+'.png'
//				/i/price_sm/t/.png
				var image = document.createElement("img");
				image.className = "replacement";
				image.alt = tokens[k] ;
				image.src = url;
				elements[j].appendChild(image);
			}

			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 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;

	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;
}




if(document.createElement && document.getElementsByTagName && !navigator.userAgent.match(/opera\/?6/i))
	var can_go=1