jQuery.preloadImages = function()
{
	for(var i = 0; i<arguments.length; i++)
	{
		jQuery("<img>").attr("src", arguments[i]);
	}
}

jQuery.preloadImages("http://www.whatsthatbug.com/buttons/ask_on.gif", "http://www.whatsthatbug.com/buttons/ask_off.gif", "http://www.whatsthatbug.com/buttons/buglove_on.gif", "http://www.whatsthatbug.com/buttons/buglove_off.gif", "http://www.whatsthatbug.com/buttons/carnage_on.gif", "http://www.whatsthatbug.com/buttons/carnage_off.gif", "http://www.whatsthatbug.com/buttons/links_on.gif", "http://www.whatsthatbug.com/buttons/links_off.gif", "http://www.whatsthatbug.com/buttons/about_on.gif", "http://www.whatsthatbug.com/buttons/about_off.gif", "http://www.whatsthatbug.com/buttons/topten_on.gif", "http://www.whatsthatbug.com/buttons/topten_off.gif");
jQuery(
	function()
	{
		// set up rollover
		jQuery("img.rollover").hover(
			function()
			{
				this.src = this.src.replace("_off","_on");
			},
			function()
			{
				this.src = this.src.replace("_on","_off");
			}
		);
	}
);