function $(obj)
{ 
	return document.getElementById(obj);
}
function hideDivs()
{
	var navigation = $("product-info").getElementsByTagName("div");
	var links = $("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();   
   $(divName).style.display = "block";   
   $(linkName).className = "product-nav-selected";
   var ss = document.getElementById("content");
   if(divName == "causes")
   {
		ss.style.height = 2000;
	}
	else
	{
		ss.style.height = 800;
	}
   
}