function imgPreload() {
	var args = imgPreload.arguments;
	document.imageArray = new Array(args.length);
	for(var i=0; i<args.length; i++) {
		document.imageArray[i] = new Image;
		document.imageArray[i].src = args[i];
	}
}

var ti;

function imgSwap(img) {
	clearTimeout(ti);
	document.images['hover-image'].src = img;
}

function imgSwapOut(img) {
	ti=window.setTimeout("imgSwap('" + img + "')", 500);
}