var preload_image_object = new Array();
    var img = new Array();

    img[0]="./newimg/menu.gif";
    img[1]="./newimg/menu2.gif";
    img[2]="./newimg/about.gif";
    img[3]="./newimg/about2.gif";
    img[4]="./newimg/contact.gif";
    img[5]="./newimg/contact2.gif";
    img[6]="./newimg/login.gif";
    img[7]="./newimg/login2.gif";
    img[8]="./newimg/cart.gif";
    img[9]="./newimg/cart2.gif";

    var i=0;
    for(i=0;i<=8;i++){
         preload_image_object[i]=new Image();
         preload_image_object[i].src=img[i];
    }

function imgswap(imgid,imgName) {
//	document.getElementById(imgid).src=preload_image_object[imgNumber].src;
	document.getElementById(imgid).src="newimg/"+imgName+".gif";
}