function checkAll( n, fldName ) {
  if (!fldName) {
     fldName = 'cb';
  }
	var f = document.checkform;
	var c = f.toggle.checked;
	var n2 = 0;
	for (i=0; i < n; i++) {
		cb = eval( 'f.' + fldName + '' + i );
		if (cb) {
			cb.checked = c;
			n2++;
		}
	}
	if (c) {
		document.checkform.boxchecked.value = n2;
	} else {
		document.checkform.boxchecked.value = 0;
	}
}