image1 = new Image();
image1.src = "../images/button/bt_Home_on.gif";
image2 = new Image();
image2.src = "../images/button/bt_Portfolio_on.gif";
image3 = new Image();
image3.src = "../images/button/bt_Services_on.gif";
image4 = new Image();
image4.src = "../images/button/bt_ClientList_on.gif";
image5 = new Image();
image5.src = "../images/button/bt_Contact_on.gif";

function imageSwap(x,val) {
	x.src = '../images/button/' + val;
}