var userAgent   = navigator.userAgent.toLowerCase();
var is_mac      = userAgent.indexOf('mac') != -1;
var is_netscape = (userAgent.indexOf('mozilla') != -1)
		  && (userAgent.indexOf('compatible') == -1);
//var rollovers_are_enabled = !(is_mac && is_netscape);
var rollovers_are_enabled = true;

var rollovers   = new Array();

function imgPreload(name)
{
	if (document.images)
	{
		if (rollovers_are_enabled)
		{
			rollovers[name] = new Object();
			rollovers[name].on = new Image();
			rollovers[name].on.src = path + '/' + name + '_on.gif';
			rollovers[name].off = new Image();
			rollovers[name].off.src = path + '/' + name + '.gif';
		}
	}
}

function imgOn(name)
{
	if (document.images)
	{
		if (rollovers_are_enabled)
		{
			if (rollovers[name].on)
			{
				document.images[name].src = rollovers[name].on.src;
			}
		}
	}
}

function imgOff(name)
{
	if (document.images)
	{
		if (rollovers_are_enabled)
		{
			if (rollovers[name].off)
			{
				document.images[name].src = rollovers[name].off.src;
			}
		}
	}
}