// Java Document

    {
       var i,j;
       for (i=0; i < document.forms[0].elements.length-1; i++)
          switch (String(document.forms[0].elements[i].name).substring(0,3))
          {
             case "chk":
                if (document.forms[0].elements[i].checked)
                   document.forms[0].elements[i].value = "Yes";
                else {
                   document.forms[0].elements[i].checked = true;
                   document.forms[0].elements[i].value = "No";
                }
                break;
          }
    }



 function checkFields() {
  missinginfo = "";
  if (document.f1.txtName.value == "") {
  missinginfo += "\n     - Please Enter Your Name";
  }
  if (document.f1.txtSent_From_Email_Address.value == false) {
  missinginfo += "\n     - Please Enter Your Email Address";
  }
  if (document.f1.txtTelephone_No.value == false) {
  missinginfo += "\n     - Please Enter Your Telephone Number";
  }
  if (missinginfo != "") {
  missinginfo ="_____________________________\n" +
  "We have found the following problems with your entries:\n" +
  missinginfo + "\n_____________________________" +
  "\nPlease re-enter and submit again!";
  alert(missinginfo);
  return false;
  }
 }