//       Below function disables the submit button upon submitting the form.
//       theForm is the form object.  This is passed via the function on the onSubmit event handler.
//       submitButtonType = 0 (For non-image type submit buttons, just make sure the submit button is named 'submit')
//       submitButtonType = 1 (For image type submit buttons)
//       submitButtonName can be blank.  The name of the submit button for image type buttons is passed here.  Please keep
//       in mind that the name of the image submit button MUST BE UNIQUE within the page.
function disableFormSubmit(theForm, submitButtonType, submitButtonName) {
    if (submitButtonType == 0) {
       if (document.all || document.getElementById) {
           for (i = 0; i < theForm.length; i++) {
              var tempObj = theForm.elements[i];
              if (tempObj.type.toLowerCase() == "submit" || tempObj.type.toLowerCase() == "reset")
                        tempObj.disabled = true;
           }
           return true;
       }
       else {
           // The form has been submitted.  But, since you're not using IE 4+ or NS 6, the submit button was not disabled on form submission.
           return false;
       }
    }
    else {
       document.all[submitButtonName].disabled = true;
       return true;
    }
}