var http_request = false;

function loadXMLDoc( url, funct ) {
	http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) return false;
	http_request.onreadystatechange = funct;
	http_request.open('GET', url , true);
	http_request.send(null);
}

function getFilePath(){
	if ( http_request.readyState == 4 ){
		if ( http_request.status == 200 ) {
			var xmldoc = http_request.responseXML;
			var imageNode = xmldoc.getElementsByTagName('image'); 
			var numRows = imageNode.length;
			var randomRow = Math.floor( Math.random() * numRows);
			if( randomRow == 0 ) randomRow = 1;
			var filePath = imageNode.item(randomRow).getAttribute("filepath");
			return filePath;
		}
	}
}

function championsImg() { 
	var imgFilePath = getFilePath();
	if(imgFilePath){
		var ImgTag = $('champions_img');
		ImgTag.src = '/images/champions/' + imgFilePath;
		show('champions_img');
		// Load second Xml File
		loadXMLDoc( '/images/experts/images.xml' , expertsImg );
	}
}

function expertsImg() { 
	var imgFilePath = getFilePath();
	if(imgFilePath){
		var ImgTag = $('experts_img');
		ImgTag.src = '/images/experts/' + imgFilePath;
		show('experts_img');
		// Load Third Xml File
		loadXMLDoc( '/images/leftpanel/images.xml' , leftpanelImg );
	}
}

function leftpanelImg() { 
	var imgFilePath = getFilePath();
	if(imgFilePath){
		var ImgTag = $('leftpanel_img');
		show('leftpanel_img');
		ImgTag.src = '/images/leftpanel/' + imgFilePath;
	}
}

function initXML(){
	// Load First Xml File
	loadXMLDoc( '/images/champions/images.xml' , championsImg );
}

addEvent( window, 'load', initXML );