if (document.images) {

	homeon = new Image();
	homeon.src = "images/btn_home_on.jpg";

	abouton = new Image();
	abouton.src = "images/btn_about_on.jpg";

	serviceson = new Image();
	serviceson.src = "images/btn_services_on.jpg";

	newson = new Image();
	newson.src = "images/btn_news_on.jpg";

	contacton = new Image();
	contacton.src = "images/btn_contact_on.jpg";

	homeoff = new Image();
	homeoff.src = "images/btn_home_off.jpg";

	aboutoff = new Image();
	aboutoff.src = "images/btn_about_off.jpg";

	servicesoff = new Image();
	servicesoff.src = "images/btn_services_off.jpg";

	contactoff = new Image();
	contactoff.src = "images/btn_contact_off.jpg";
	
	newsoff = new Image();
	newsoff.src = "images/btn_news_off.jpg";

}


function imgOn(imgDocID,imgObjName)
{
	document.images[imgDocID].src = eval(imgObjName + ".src");
}