addLoadEvent(initTriggers);

function initTriggers()
{
	if(!document.createElement && !document.getElementsByTagName) { return false; }
	if(!document.getElementById("triggers") && !document.getElementById("target")) { return false; }
	var trigger = document.getElementById("triggers").getElementsByTagName("img");
	for(i = 0; i < trigger.length; i++)
	{
		trigger[i].onmouseover = function()
		{
			this.style.cursor = "pointer";
			swapTarget(this.id);
		}
	}
}

function swapTarget(obj)
{
	var target = document.getElementById("target");
	var newTargetImg = obj.substring(obj.lastIndexOf("/") + 1);
	var targetPath = target.src.substring(0, target.src.lastIndexOf("/") + 1);
	target.src = targetPath + newTargetImg;
}

function addLoadEvent(func)
{
	var oldonload = window.onload;
	if(typeof window.onload != "function")
	{
		window.onload = func;
	}
	else
	{
		window.onload = function()
		{
			oldonload();
			func();
		}
	}
}