var menu;
var theTop = 100;
var theLeft = 1;
var old = theTop;

function menuOnload(divName) 
{	
	var browserName=navigator.appName;
		
	var width = document.body.clientWidth;
		
	theLeft = ( (width - 780)/2 ) + 1;
	
	menu = document.getElementById(divName);	
	
	if (browserName == "Microsoft Internet Explorer")
		theLeft = theLeft;
	else
		theLeft = theLeft - 2;
	
	
	//menu.style.left= theLeft;
	movemenu();
}

function movemenu()
{
	if (window.innerHeight)
	{
		pos = window.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop)
	{
		pos = document.documentElement.scrollTop;
	}
	else if (document.body)
	{
		pos = document.body.scrollTop;
	}
	if (pos < theTop) pos = theTop;
	else pos += 0;
	if (pos == old)
	{
		menu.style.top = pos;
	}
	if (theLeft > 0)
	{
		menu.style.left= theLeft;
	}
	old = pos;
	temp = setTimeout('movemenu()',100);
}