rollovers = new Array();
rollovers["roUx"] = "images/thumb-ux.jpg";
rollovers["roEcommerce"] = "images/thumb-ecom.jpg";
rollovers["roCms"] = "images/thumb-cms.jpg";
rollovers["roInfo"] = "images/thumb-info.jpg";
rollovers["roData"] = "images/thumb-data.jpg";


window.onload = function setup() 
{	
	if(document.getElementsById || document.all)
	{
		preLoadRollovers();
	}
}


function preLoadRollovers()
{
  preLoads = new Array();
  for(var r in rollovers)
  {
	  preLoads[r] = new Image();
	  preLoads[r].src = r;
  }
}


function blockOver(img)
{
	if (document.getElementById || document.all) 
	{
		var obj = document.images["roTarget"];
		obj.src = rollovers[img.id];
	}
}


function artHref(id)
{
	if (article[id]["url"]) 
	{
		document.location.href = article[id]["url"];
	}
}