window.onload = rolloverInit;
var imageNames = ['navigation-home', 'navigation-support', 'navigation-offers', 'navigation-services', 'navigation-training', 'navigation-contact'];

function rolloverInit()
{
	for (var i=0; i<document.images.length; i++)
	{
		if (document.images[i].parentNode.tagName == "A")
		{
			setupRollover(document.images[i]);
		}
	}
}

function setupRollover(thisImage)
{
	thisImage.outImage = new Image ();
	thisImage.outImage.src = thisImage.src;
	thisImage.onmouseout = rollOut;
	
	thisImage.overImage = new Image();
	thisImage.overImage.src = "/images/" + thisImage.id + "ON.png";
	thisImage.onmouseover = rollOver;
}

function rollOver()
{
	this.src = this.overImage.src;
}

function rollOut()
{
	this.src = this.outImage.src;
}