//form validation
function CheckFormValues (){

var iValidationCounter = 0;

// Email Text Box Validation Code -- START --
var txt=document.contactusfrm.email.value;
if (txt.indexOf("@")==-1){
      alert("Please enter a valid email address.");
      document.contactusfrm.email.focus();
      return;
}

// Email Text Box Validation Code -- END --

//text field complete validation
if (document.contactusfrm.companyName.value == "") {
  alert("Please enter the company name.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.companyName.focus();
  return;
}

if (document.contactusfrm.contactName.value == "") {
  alert("Please enter the contact name.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.contactName.focus();
  return;
}

if (document.contactusfrm.telephone.value == "") {
  alert("Please enter the contact telephone.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.telephone.focus();
  return;
}

if (document.contactusfrm.partDesc.value == "") {
  alert("Please enter the part description.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.partDesc.focus();
  return;
}

if (document.contactusfrm.quantity.selectedIndex == 0) {
  alert("Please select your quantity requirements.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.quantity.focus();
  return;
}

if (document.contactusfrm.document.value == "") {
  alert("Please select a file to upload.");
  iValidationCounter = iValidationCounter + 1;
  document.contactusfrm.document.focus();
  return;
}


//end text field validation

if (iValidationCounter == 0) {
document.contactusfrm.submit();
}
}