function gridImg(name,gif) {
		var img=document.images[name];
		if (img) {
			if (img.filters && img.filters[0]) img.filters[0].apply();
			img.src="/images/"+gif;
			if (img.filters && img.filters[0]) img.filters[0].play();
		}
	}

	function preloadGridImages(name,total) {
		for (i=1;i<=total;i++)
			preloadImage("/images/grid."+name+"."+i+"o.gif");
	}