if (document.images) {

	abouton = new Image(55,22);
	abouton.src = "images/site_nav/about_ov.jpg";
	aboutoff = new Image(55,22);
	aboutoff.src = "images/site_nav/about_up.jpg";
	
	conceptson = new Image(55,22);
	conceptson.src = "images/site_nav/concepts_ov.jpg";
	conceptsoff = new Image(55,22);
	conceptsoff.src = "images/site_nav/concepts_up.jpg";
	
	designon = new Image(55,22);
	designon.src = "images/site_nav/design_ov.jpg";
	designoff = new Image(55,22);
	designoff.src = "images/site_nav/design_up.jpg";
	
	illustrationon = new Image(55,22);
	illustrationon.src = "images/site_nav/illustration_ov.jpg";
	illustrationoff = new Image(55,22);
	illustrationoff.src = "images/site_nav/illustration_up.jpg";
	
	nexton = new Image(55,22);
	nexton.src = "images/site_nav/next_ov.jpg";
	nextoff = new Image(55,22);
	nextoff.src = "images/site_nav/next_up.jpg";
	
	nextpageon = new Image(55,22);
	nextpageon.src = "images/site_nav/nextpage_ov.jpg";
	nextpageoff = new Image(55,22);
	nextpageoff.src = "images/site_nav/nextpage_up.jpg";
	
	previouson = new Image(55,22);
	previouson.src = "images/site_nav/previous_ov.jpg";
	previousoff = new Image(55,22);
	previousoff.src = "images/site_nav/previous_up.jpg";
	
	previouspageon = new Image(55,22);
	previouspageon.src = "images/site_nav/previouspage_ov.jpg";
	previouspageoff = new Image(55,22);
	previouspageoff.src = "images/site_nav/previouspage_up.jpg";
	
	sketcheson = new Image(55,22);
	sketcheson.src = "images/site_nav/sketches_ov.jpg";
	sketchesoff = new Image(55,22);
	sketchesoff.src = "images/site_nav/sketches_up.jpg";
	
	gamearton = new Image(55,22);
	gamearton.src = "images/site_nav/gameart_ov.jpg";
	gameartoff = new Image(55,22);
	gameartoff.src = "images/site_nav/gameart_up.jpg";
	
	
	
	
}

function rollOver(imgName) {
	if (document.images) {
	
		imgOn = eval(imgName + "on.src"); 
	document[imgName].src = imgOn;
	}
	
}
	function rollOff(imgName) {
	if (document.images) {
	imgOff = eval(imgName + "off.src");
		document[imgName].src = imgOff;
		}
		}