function OnFormErrorCB()
{
 var elem = this ;
 
 if(this.type=='file')
 {
  elem = document.getElementById("c_"+this.name) ;
 }
 
 if(!this.valid)
 {
  if(elem.className.indexOf('FormError')==-1)
  {
   elem.className += ' FormError' ;
  }
 }
 else
 {
  if(elem.className.indexOf("FormError")!=-1)
  {
   elem.className = elem.className.replace(/FormError/gi, "") ;
  }
 }
}