$(document).ready(function() {

$("#offer").mouseover(function() {
        //alert('ok');
    $("#nav2").css("background-image", "url(../../../navigations/DownBar.jpg)");
})

$("#offer").mouseout(function() {
    //alert('ok');
$("#nav2").css("background-image", "url(../../../images/grad-background.gif)");
})

});