if (document.images) {
     img1iservon = new Image(); img1iservon.src = "images/i_services/subMenu/s_hosting_on.jpg";
     img2iservon = new Image(); img2iservon.src = "images/i_services/subMenu/d_hosting_on.jpg";
     img3iservon = new Image(); img3iservon.src = "images/i_services/subMenu/registration_on.jpg";
     img4iservon = new Image(); img4iservon.src = "images/i_services/subMenu/internet_marketing_on.jpg";
     img5iservon = new Image(); img5iservon.src = "images/i_services/subMenu/other_services_on.jpg";         
}
if (document.images) {
    img1iservoff = new Image(); img1iservoff.src = "images/i_services/subMenu/s_hosting_off.jpg";
    img2iservoff = new Image(); img2iservoff.src = "images/i_services/subMenu/d_hosting_off.jpg";
    img3iservoff = new Image(); img3iservoff.src = "images/i_services/subMenu/registration_off.jpg";
    img4iservoff = new Image(); img4iservoff.src = "images/i_services/subMenu/internet_marketing_off.jpg";
    img5iservoff = new Image(); img5iservoff.src = "images/i_services/subMenu/other_services_off.jpg";
}