countInitEventImg=0;
function initEventImg(){
	if(document.body.getAttribute("imgLoad")!="true")
		document.body.setAttribute("imgLoad","true");
	else
		return;
	var arrImg=document.getElementsByTagName('IMG');
	if(arrImg.length==0) return;
	preLoadImgs= new Array();
	counter=0;
	for(key in arrImg){
		if(arrImg[key].tagName=='IMG'&&arrImg[key].className=='blinkImg'){
			var virtualDir=location.pathname.split('/');
			var nameImg=undefined;			
			if(virtualDir[1]!=undefined&&virtualDir[1]=='')
				nameImg='button1';
			if(virtualDir[1]!=undefined&&virtualDir[1]=='plansandpricing.html')
				nameImg='button2';
			if(virtualDir[1]!=undefined&&(virtualDir[1]=='features'||virtualDir[1]=='features.html'))
				nameImg='button3';
			if(virtualDir[1]!=undefined&&(virtualDir[1]=='whyringcentral'||virtualDir[1]=='whyringcentral.html'))
				nameImg='button4';	
			if(virtualDir[1]!=undefined&&virtualDir[1]=='support.html')
				nameImg='button5';
			if(virtualDir[1]!=undefined&&virtualDir[1]=='ordernow.html')
				nameImg='button6';
			preLoadImgs[key] = new Image();
			preLoadImgs[key].src=arrImg[key].src.replace(/\.gif$/,'o.gif');
			var re = new RegExp("\\/top_menu\\/"+nameImg+"\\.gif$", "g");
			if(arrImg[key].src.match(re)){
				arrImg[key].src=arrImg[key].src.replace(/\.gif$/,'o.gif');
				continue;
			}			
			arrImg[key].onmouseover=function(){
					this.src=this.src.replace(/\.gif$/,'o.gif');
			}
			arrImg[key].onmouseout=function(){
					this.src=this.src.replace(/o\.gif$/,'.gif');
			}			
			counter++;
		}
	}
	countInitEventImg++;
}