function checkContact() {
   if (document.contact.name.value.length == 0)
       {alert("             Please enter your name");
           document.contact.name.focus();
           return false;}
        else if (document.contact.email.value.length == 0)
       {alert("     Please enter your email address");
           document.contact.email.focus();
           return false;}
        else if (document.contact.phone.value.length == 0)
       {alert("     Please enter your phone number");
           document.contact.phone.focus();
           return false;}
   else return true;
}