if (document.images) {
	// Define and preload ON button images
img1on=new Image();
img1on.src="web/servani.gif";
img2on=new Image();
img2on.src="web/clienani.gif";
img3on=new Image();
img3on.src="web/cntctani.gif";

	// Define and preload OFF button images
img1off=new Image();
img1off.src="web/services.gif";
img2off=new Image();
img2off.src="web/clients.gif";
img3off=new Image();
img3off.src="web/contacts.gif";

	// Define and preload description images
desOff      = new Image();
desOff.src = "web/saskatchewan.gif";
img1des     = new Image();
img1des.src = "web/design_services.jpg";
img2des     = new Image();
img2des.src = "web/promotions_clients.jpg";
img3des     = new Image();
img3des.src = "web/webmasters_contact.jpg";
}

	// Replace the off image with the on image
function imgOn(imgName) {
if (document.images) {
   document[imgName].src=eval(imgName+"on.src");
   document["desc"].src = eval(imgName+"des.src");
   }
}

	// Replace the on image with the off image
function imgOff(imgName) {
if (document.images) {
   document[imgName].src=eval(imgName+"off.src");
   document["desc"].src = eval("desOff.src");
   }
}