if (document.images) {
	delsordi_on = new Image();
	delsordi_on.src = "media/btn_delsordi_on.gif";
	delsordi_off = new Image();
	delsordi_off.src = "media/btn_delsordi.gif";
}
// following 2 functions are for swapping out single images
function turnOn1(ImageName) {
	if (document.images) {
		document[ImageName].src = eval(ImageName + "_on.src");
	}
}

function turnOff1(ImageName) {
	if (document.images) {
		document[ImageName].src = eval(ImageName + "_off.src");
	}
}