var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadedobjects="";
var rootdomain="http://"+window.location.hostname;
var preloaderInterval;
var preloaderObiekt;
var licznik = 0;
var preloadSpeedDisplay = 20;

function loadContent(url, containerid, preloaderid){
	var preloader = document.getElementById(preloaderid);
	var container = document.getElementById(containerid);
	
	preloader.style.height = container.offsetHeight + "px";
	preloader.style.width = container.offsetWidth + "px";
	
	var PosX = 0;
	var PosY = 0;
	if (container.offsetParent) {
		PosY = container.offsetTop;
		PosX = container.offsetLeft;
		while (container = container.offsetParent) {
			PosY += container.offsetTop;
			PosX += container.offsetLeft;
		}
	}
	preloader.style.top = PosY + "px";
	preloader.style.left = PosX + "px";
	preloader.style.display = 'block';
	
	preloaderInterval = setInterval("DisplayPreloader('"+url+"', '"+containerid+"', '"+preloaderid+"');", preloadSpeedDisplay);
	
}

function DisplayPreloader(url, containerid, preloaderid){
	preloaderObiekt = document.getElementById(preloaderid);
	nav = navigator.userAgent;
	if(nav.indexOf("IE") !== -1){
	preloaderObiekt.style.filter = 'alpha(opacity = '+licznik+')';
	} else {
	preloaderObiekt.style.opacity = licznik/100;
	}
	licznik = licznik + 10;
	if(licznik > 100 ){
		window.clearInterval(preloaderInterval);
		ajaxpage(url, containerid, preloaderid);
	}
}

function HidePreloader(preloaderid){
	preloaderObiekt = document.getElementById(preloaderid);
	nav = navigator.userAgent;
	if(nav.indexOf("IE") !== -1){
	preloaderObiekt.style.filter = 'alpha(opacity = '+licznik+')';
	} else {
	preloaderObiekt.style.opacity = licznik/100;
	}
	licznik = licznik - 10;
	if(licznik < 0 ){
		window.clearInterval(preloaderInterval);
		preloaderObiekt.style.display = 'none';
	}
}

function ajaxpage(url, containerid, preloaderid){
	var page_request = false
	if (window.XMLHttpRequest) // if Mozilla, Safari etc
	page_request = new XMLHttpRequest()
	else if (window.ActiveXObject){ // if IE
	try {
	page_request = new ActiveXObject("Msxml2.XMLHTTP")
	} 
	catch (e){
	try{
	page_request = new ActiveXObject("Microsoft.XMLHTTP")
	}
	catch (e){}
	}
	}
	else
	return false
	page_request.onreadystatechange=function(){
	loadpage(page_request, containerid, preloaderid)
	}
	if (bustcachevar) //if bust caching of external page
	var bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
	page_request.open('GET', url+bustcacheparameter, true)
	page_request.send(null)
}

function loadpage(page_request, containerid, preloaderid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
	document.getElementById(containerid).innerHTML=page_request.responseText;
	preloaderInterval = setInterval("HidePreloader('"+preloaderid+"');", preloadSpeedDisplay);
	}
}

function loadobjs(){
	if (!document.getElementById)
	return
	for (i=0; i<arguments.length; i++){
	var file=arguments[i]
	var fileref=""
	if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
	if (file.indexOf(".js")!=-1){ //If object is a js file
	fileref=document.createElement('script')
	fileref.setAttribute("type","text/javascript");
	fileref.setAttribute("src", file);
	}
	else if (file.indexOf(".css")!=-1){ //If object is a css file
	fileref=document.createElement("link")
	fileref.setAttribute("rel", "stylesheet");
	fileref.setAttribute("type", "text/css");
	fileref.setAttribute("href", file);
	}
	}
	if (fileref!=""){
	document.getElementsByTagName("head").item(0).appendChild(fileref)
	loadedobjects+=file+" " //Remember this object as being already added to page
	}
	}
}