function validate(form) {
  var valid = true;
  
  if (form == "bill_upload") {
    document.bill_upload.bill_num0.style.background = "#FFFFFF";
    document.bill_upload.bill_date0.style.background = "#FFFFFF";
    document.bill_upload.bill_title0.style.background = "#FFFFFF";
    document.bill_upload.bill_file0.style.background = "#FFFFFF";


    //Test for empty entries
    if (document.bill_upload.bill_num0.value == "") {
      document.bill_upload.bill_num0.style.background = "#FF3030";
      alert ( "Please enter a number for this bill.");
      valid = false;
    }
    else if (document.bill_upload.bill_date0.value == "") {
      document.bill_upload.bill_date0.style.background = "#FF3030";
      alert ( "Please enter a date for this bill.");
      valid = false;
    }
    else if (document.bill_upload.bill_title0.value == "") {
      document.bill_upload.bill_title0.style.background = "#FF3030";
      alert ( "Please enter a title for this bill.");
      valid = false;
    }
    else if (document.bill_upload.bill_file0.value == "") {
      document.bill_upload.bill_file0.style.background = "#FF3030";
      alert ( "Please upload a file for this bill.");
      valid = false;
    }
  }
  return valid;
}