/* 
function $(obj)
{ 
	return document.getElementById(obj);
} 
*/

function hideDivs()
{
	var navigation = document.getElementById("product-info").getElementsByTagName("div");
	var links = document.getElementById("product-nav").getElementsByTagName("a");
	
	for (var i=0; i < navigation.length; i++)
	{
		navigation[i].style.display = "none";
	}
	for (var i=0; i < links.length; i++)
	{
		links[i].className = "product-nav-unselected";
	}
}
function showDiv(divName, linkName)
{
   hideDivs();   
   document.getElementById(divName).style.display = "block";   
   document.getElementById(linkName).className = "product-nav-selected";
}