var mouseOvers = new Array();
var mouseOuts = new Array();
var mouseDowns = new Array();
var mouseUps = new Array();
var currentLocation;
		
function init()
{
	var nav = document.getElementById('menutable');
	var imgs = nav.getElementsByTagName('img');
	for (var i=0; i<imgs.length; i++)
	{
		if(imgs[i].id != '')
		{
			imgs[i].onmouseover = mouseGoesOver;
			imgs[i].onmouseout = mouseGoesOut;
			imgs[i].onmousedown = mouseGoesDown;
			imgs[i].onmouseup = mouseGoesUp;
			var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf('.'));
			mouseOuts[i] = new Image();
			mouseOuts[i].src = imgs[i].src;
			mouseOvers[i] = new Image();
			mouseOvers[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + "_over" + suffix;
			mouseDowns[i] = new Image();
			mouseDowns[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + "_down" + suffix;
			mouseUps[i] = new Image();
			mouseUps[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + suffix;
			imgs[i].number = i;
		}
		else
		{
			imgs[i].onmouseover = '';
			imgs[i].onmouseout = '';
			imgs[i].onmousedown = '';
			imgs[i].onmouseup = '';
		}
	}
}
function mouseGoesOver()
{
	this.src = mouseOvers[this.number].src;
}
function mouseGoesOut()
{
	this.src = mouseOuts[this.number].src;
}
function mouseGoesDown()
{
	this.src = mouseDowns[this.number].src;
}
function mouseGoesUp()
{
	this.src = mouseUps[this.number].src;
	parent.location = "./" + this.id + ".html";
}