if (document.images) {

	img1on = new Image ();
	img1on.src = "images/nav-home-over.gif";
   
	img1off = new Image();
	img1off.src = "images/nav-home.gif";


	img2on = new Image ();
	img2on.src = "images/nav-prod-over.gif";
   
	img2off = new Image();
	img2off.src = "images/nav-prod.gif";


	img3on = new Image ();
	img3on.src = "images/nav-down-over.gif";
   
	img3off = new Image();
	img3off.src = "images/nav-down.gif";


	img4on = new Image ();
	img4on.src = "images/nav-pric-over.gif";
   
	img4off = new Image();
	img4off.src = "images/nav-pric.gif";
	

	img5on = new Image ();
	img5on.src = "images/nav-store-over.gif";
   
	img5off = new Image();
	img5off.src = "images/nav-store.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");
}
}