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,message)
{
	if(document.getElementById(divId).innerHTML == null || document.getElementById(divId).innerHTML == "")
	{
		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 = message;
		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
	}
	else
	{
		document.getElementById(divId).innerHTML = "";
	}
}

function ajax_parseJs(obj)
{
	var scriptTags = obj.getElementsByTagName('SCRIPT');
	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.setAttribute("type", "text/javascript");
	        scriptObj.setAttribute("src", scriptTags[no].src);  	
		}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){ // safari detection in jQuery
        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]);
	}	
}