var oldSrc;

if(document.images)
{
 img = new Array(3);
 img[0] = new Image();
 img[0].src = "images/whyStage_on.gif";
 
 img[1] = new Image();
 img[1].src = "images/gallery_on.gif";
 
 img[2] = new Image();
 img[2].src = "images/contactMe_on.gif";
 
 img[3] = new Image();
 img[3].src = "images/services_on.gif";
 
 img[4] = new Image();
 img[4].src = "images/home_on.gif";
}


function on(index)
{
//alert("we are here!");
 				 if(document.images)
				 {
	//			 alert("we are here!");
				 				oldSrc = document.images["img" + index].src;
								document.images["img" + index].src = img[index].src;
				 }
}

function off(index)
{
 				 if(document.images)
				 {
				 				 document.images["img" + index].src = oldSrc;
				 }
}