var imag = new Image();
imag.src = "img/home.gif";
var imag_l = new Image();
imag_l.src = "img/home_l.gif";
var imag1 = new Image();
imag1.src = "img/about.gif";
var imag1_l = new Image();
imag1_l.src = "img/about_l.gif";
var imag2 = new Image();
imag2.src = "img/contact.gif";
var imag2_l = new Image();
imag2_l.src = "img/contact_l.gif";
var imag3 = new Image();
imag3.src = "img/policy.gif";
var imag3_l = new Image();
imag3_l.src = "img/policy_l.gif";
var imag4 = new Image();
imag4.src = "img/shopping.gif";
var imag4_l = new Image();
imag4_l.src = "img/shopping_l.gif";
var imag5 = new Image();
imag5.src = "img/account.gif";
var imag5_l = new Image();
imag5_l.src = "img/account_l.gif";

function menu(a,b)
{
document.images[a].src = eval(b+".src");
}