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 = '<div align="center"><br /><br /><img src="images/ajax-loader.gif"><br />Page en cours de chargement<br /><br />';
	dynamicContent_ajaxObjects[ajaxIndex] = new sack();
	dynamicContent_ajaxObjects[ajaxIndex].requestFile = url;
	dynamicContent_ajaxObjects[ajaxIndex].onCompletion = function(){ ajax_showContent(divId,ajaxIndex,url); };
	dynamicContent_ajaxObjects[ajaxIndex].runAJAX();
}

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){
        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]);
	}	
}