function openURL(string_menuName) {
    switch (string_menuName)
    {
        case "index":
        location.href="Default.aspx";
            break;

        case "about":
         location.href="company.aspx";
            break;

        case "product":
        location.href="product.aspx";
            break;

        case "newproduct":
        location.href="newproduct.aspx";
            break;

        case "news":
        location.href="news.aspx";
            break;
        case "job":
        location.href="job.aspx";
            break;

        case "book":
        location.href="/book/";
            break;

        case "download":
         location.href="download.aspx";
            break;
       case "network":
         location.href="network.aspx";
            break;

        case "feedback":
          location.href="feedback.aspx";
            break;
        case "contact":
          location.href="contact.aspx";
            break;
    }
}