function menu(id) 
	{
	//Hide all Elements
		document.getElementById("ProductMenu").style.display = "none";
			SetOpacity(1, "ProductMenu")
		document.getElementById("ServiceMenu").style.display = "none";
			SetOpacity(1, "ServiceMenu")

	//Fade in New Menu
		document.getElementById(id).style.display = "block";
		
		var speed = 4;
		var timer = 1;

		for(i = 1; i<=99; i++)
			{
			setTimeout("SetOpacity(" + i + ", '" + id + "')",(timer * speed));
			timer++
			}
	} 

//change the opacity for different browsers 
function SetOpacity(opacity, id)
	{
	
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100); 
	object.KhtmlOpacity = (opacity / 100); 
	object.filter = "alpha(opacity=" + opacity + ")";
	}