function validate(item)
{
  var errorflag = false;

  if ( item ) {

    // make sure fields not empty
    if (!valnull(item)) {
      error('You must enter a value for this field.', item);
			errorflag = true;
		}

		if ( errorflag == true ) {
			highlighterrobj(item);
			return false;
		} else {
			unhighlighterrobj(item);
		}
	}
	else {
    // form was submitted...
    for (i=0;i<document.forms[0].elements.length;i++) {

		  var formobj = document.forms[0].elements[i];

      if ( !valnull(formobj) ) {
        error('You must enter a value for this field.', document.forms[0].elements[i]);
				highlighterrobj(document.forms[0].elements[i]);
        return false;
		  } else {
				unhighlighterrobj(document.forms[0].elements[i]);
			}

		} //close for

		return true;

  } //close else
} //close func

function ShowInstructions() {
		ShowPopup('instructions.asp', 600, 575);
}