Q1472 When submitting a form with multiple fields to a validation function, and if there's an invalid entry in one of the fields, how do you return focus to that field and reset only the value of that field, and not the rest of the form?

<script language="JavaScript"><!--
function validate(theForm) {
   errorField = -1;
   for (i=0,n=theForm.elements.length;i<n;i++) {
      if (theForm.elements[i].value == '') {
         errorField = i;
         break;
      }
   }
   if (errorField !=-1) {
      alert('Please correct field number ' errorField+1);
      theForm.elements[i].focus();
      return false;
  }
  return true;
}
//--></script>
<form onSubmit="return validate(this)">
...
</form>