window.onresize=align;
window.onload = function() {
	align();
	positionArrow();
	//HidePreloader();
	requestInit();

}



<!--script for preloader - starts-->
function HidePreloader() {

	if (document.getElementById){
		//alert ("In hideloader function");
		document.getElementById('preloader_layer').style.display='none';
		document.getElementById('black_background').style.display='none';
		document.getElementById('container_main').style.visibility = 'visible';		
	}
}
<!--script for preloader - starts-->

function getXmlPath()
{

//alert('preLoaderFileName is :' + preLoaderFileName);
return preLoaderFileName;
}

function endPreloader()
{
//alert('ending preloader');
if (document.getElementById){
		document.getElementById('preloader_layer').style.display='none';
		document.getElementById('black_background').style.visibility = 'visible';		
	
	//	document.getElementById('container_main').style.visibility = 'visible';		
	}

if(window.onload)
{
HidePreloader();
}
}