var imagesArr = new Array();		
		
window.onload = function()
{	
	for(var i = 0; i < document.images.length; i++)
	{
				imagesArr[i] = new Object;
				imagesArr[i]['element']= document.images[i];
				imagesArr[i]['normal'] = document.images[i].src;
				imagesArr[i]['hover']  = document.images[i].src.replace("normal", "hover");
	}
			
	ini();
}

function ini()
{	
	for(var i = 0; i < imagesArr.length; i++)
	{		
			imagesArr[i]['element'].onmouseover = function() { setRollover(this); }	
			imagesArr[i]['element'].onmouseout = function() { setRollover(this); }				
	}
}

function setRollover(obj)
{
	for(var i = 0; i < imagesArr.length; i++)
	{
		if(obj == imagesArr[i]['element'])
		{
			if(imagesArr[i]['normal'] == obj.src)
			{
				obj.src = imagesArr[i]['hover'];
			}
			else
			{
				obj.src = imagesArr[i]['normal'];
			}			
		}
	}
}