function handle_header_links()
{
	active = ""; 
	var header_menu = document.getElementById("header-menu"); 
	for(i=0; i<header_menu.childNodes.length; i++)
	{
		child = header_menu.childNodes[i]; 
		if(child.childNodes.length > 0)
		{
			var img = child.childNodes[0]; 
			img.style.cursor = "pointer"; 
			//alert(img.src); 
			img.onmouseover = function()
			{
				 
				var newSrc = this.src.substr(0,this.src.indexOf("-"))+"-down.gif"; 
				if(this.src == newSrc) active = this.src; 
				this.src = newSrc; 
			}
			img.onmouseout = function()
			{
				if(active!=this.src)
				{
					var newSrc = this.src.substr(0,this.src.indexOf("-"))+"-up.gif"; 
					this.src = newSrc; 
				}
			}
		}
	}
}
function go(url, internal)
{
	if(!internal)
	{
		window.open(url); 
	}
	if(internal == 1)
	{
		window.location = url; 
	}
}

function swap(target, src)
{
	target.src = src; 
}
function init()
{
	handle_header_links(); 
}
 if (window.addEventListener) window.addEventListener("load",init,false);
 else if (window.attachEvent) window.attachEvent("onload",init);