function main_rollovers()
{
	try
	{
		if (document.getElementById)
			var x = document.getElementById('main_navigation').getElementsByTagName('img');
		else if (document.all)
			var x = document.all['main_navigation'].all.tags('img');
		else return;
		if (!x) return;
	} catch (e) {return};
	var preloads = new Object();
	for (var i=0;i<x.length;i++)
	{
		if(x[i].className != 'selected' && x[i].className != 'design' && !x[i].src.match('-on.gif'))
		{
			preloads['normal_'+x[i].src] = new Image;
			preloads['normal_'+x[i].src].src = x[i].src
			preloads['over_'+x[i].src] = new Image;
			preloads['over_'+x[i].src].src = x[i].src.replace(/\.gif/,'-on.gif')
			x[i].onmouseover = function () {this.src=preloads['over_'+this.src].src;}
			x[i].onmouseout = function () {this.src=preloads['normal_'+this.src.replace(/\-on\.gif/,'.gif')].src;}
		}
	}
}

window.onload = main_rollovers;