var enableCache = true;
var jsCache = new Array();

var dynamicContent_ajaxObjects = new Array();

function ajax_showContent(divId,ajaxIndex,url)
{
	var targetObj = document.getElementById(divId);
	targetObj.innerHTML = dynamicContent_ajaxObjects[ajaxIndex].response;
	if(enableCache){
		jsCache[url] = 	dynamicContent_ajaxObjects[ajaxIndex].response;
	}
	dynamicContent_ajaxObjects[ajaxIndex] = false;
	
	ajax_parseJs(targetObj)
}

function ajax_loadContent(divId,url)
{
	if(enableCache && jsCache[url]){
		
		document.getElementById(divId).innerHTML = jsCache[url];
		ajax_parseJs(document.getElementById(divId))
		evaluateCss(document.getElementById(divId))
		return;
	}
	
	var ajaxIndex = dynamicContent_ajaxObjects.length;
	document.getElementById(divId).innerHTML = '<br />Loading...';
	dynamicContent_ajaxObjects[ajaxIndex] = new sack();
	
	if(url.indexOf('?')>=0){
		dynamicContent_ajaxObjects[ajaxIndex].method='GET';
		var string = url.substring(url.indexOf('?'));
		url = url.replace(string,'');
		string = string.replace('?','');
		var items = string.split(/&/g);
		for(var no=0;no<items.length;no++){
			var tokens = items[no].split('=');
			if(tokens.length==2){
				dynamicContent_ajaxObjects[ajaxIndex].setVar(tokens[0],tokens[1]);
			}	
		}	
		url = url.replace(string,'');
	}

	
	dynamicContent_ajaxObjects[ajaxIndex].requestFile = url;	// Specifying which file to get
	dynamicContent_ajaxObjects[ajaxIndex].onCompletion = function(){ ajax_showContent(divId,ajaxIndex,url); };	// Specify function that will be executed after file has been found
	dynamicContent_ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function	
	
	
}

function ajax_parseJs(obj)
{
	var scriptTags = obj.getElementsByTagName("script");
	//console.log(scriptTags);
	var string = "";
	var jsCode = "";
	
	for(var no=0; no < scriptTags.length; no++) {
		if(scriptTags[no].src) {
			var head = document.getElementsByTagName("head")[0];
			
			var scriptObj = document.createElement("script");
			scriptObj.type = "text/javascript";
			scriptObj.src = scriptTags[no].src;
			
			head.appendChild(scriptObj);
		} else {
			if(navigator.userAgent.toLowerCase().indexOf('opera')>=0) jsCode = jsCode + scriptTags[no].text + '\n';
			else jsCode = jsCode + scriptTags[no].innerHTML;
		}
	}

	if(jsCode)ajax_installScript(jsCode);
}


function ajax_installScript(script) {
	if(!script) return;
	
	if(window.execScript) window.execScript(script)
	else if(window.jQuery && jQuery.browser.safari) window.setTimeout(script,0);
	else window.setTimeout(script, 0);
}	
	
	
function evaluateCss(obj)
{
	var cssTags = obj.getElementsByTagName('STYLE');
	var head = document.getElementsByTagName('HEAD')[0];
	for(var no=0;no<cssTags.length;no++){
		head.appendChild(cssTags[no]);
	}	
}