function OnFormErrorCB()
{
 //trace(this.id+" "+this.valid)
 var elem = document.getElementById("l_"+this.id) ;

 if(!this.valid)
 {
  if(elem && elem.className.indexOf('FormError')==-1)
  {
   elem.className += ' FormError' ;
  }
 }
 else
 {
  if(elem && elem.className.indexOf("FormError")!=-1)
  {
   elem.className = elem.className.replace(/FormError/gi, "") ;
  }
 }
}