$(document).ready(function() {
    $("#product-images ul li a").hover(function() {
        var check = this.title;
        $("#product-images ul li a").removeClass("current");
        $(this).addClass("current");
        $("#product-images").css({ 'background-image': 'url(../App_Themes/Hector/images/list_bg/' + this.title + '.jpg)' });
    });
});