function go_url(url)
   {
      location.href=url;
   }

function togglemenu(toggleid)
   {
   var supported = (document.getElementById || document.all || document.layers);
   if (!supported)
      {
      alert('Your browser doesn\'t support advance DOM');
      return;
      }

   id = document.getElementById(toggleid);

   /*
   ** none or blank because its not set when the page is loaded if you use CSS?
   */
    if ((id.style.display == "none") || (id.style.display == ""))
      {
         id.style.display="block"
      }
   else
      {
         id.style.display="none"
      }

   }

function validate_contactus(form)
   {

      var emailRegxp = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,2}$/;

      with (form.yourname)
         if (value == "")
            {
                alert("You've not entered your name.");
                focus();
                return false;
            }

      with (form.company)
         if (value == "")
            {
                alert("You've not entered your company name.");
                focus();
                return false;
            }

      with (form.phone)
         if (value == "")
            {
                alert("You've not entered your telephone number.");
                focus();
                return false;
            }

      with (form.email)
         if (value == "")
            {
                alert("You've not entered your email address.");
                focus();
                return false;
            }

      if (!emailRegxp.test(form.email.value))
         {
            alert("The email address you've entered doesn't not appear valid (user@domain.com).");
            focus();
            return false;

         }

      with (form.comment)
         if (value == "")
            {
                alert("You've not entered your message.");
                focus();
                return false;
            }

   return true;
   }