var name, company, phone_number, email_address, comments;
function SubmitContact() {
   if (document.getElementById("first-name-field").value == "" || document.getElementById("first-name-field").value == "" || document.getElementById("email-address-field").value == "") {
       alert("Please enter your first/last name and email address.");
       return;
   }

   name = document.getElementById("first-name-field").value + " " + document.getElementById("last-name-field").value;
   company = document.getElementById("company-name-field").value;
   phone_number = document.getElementById("phone-number-field").value;
   email_address = document.getElementById("email-address-field").value;
   comments = document.getElementById("comments-field").value;
   var url = "contact_thank_you.aspx?name=" + name + "&company="+company+"&phone_number=" + phone_number + "&email_address=" + email_address+"&comments="+comments;    
   window.location = url;
   //alert(url);
}