if (document.images) {
	img1on = new Image ();
	img1on.src = "../images/nav_new_01.gif";
   
	img1off = new Image();
	img1off.src = "../images/nav_new_00.gif";

	img2on = new Image ();
	img2on.src = "../images/nav_products_01.gif";
   
	img2off = new Image();
	img2off.src = "../images/nav_products_00.gif";

	img3on = new Image ();
	img3on.src = "../images/nav_about_us_01.gif";
   
	img3off = new Image();
	img3off.src = "../images/nav_about_us_00.gif";

	img4on = new Image ();
	img4on.src = "../images/nav_contact_01.gif";
   
	img4off = new Image();
	img4off.src = "../images/nav_contact_00.gif";

	
}

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

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