function keyhandler(){
    if(window.event.keyCode==13){
      return false;
    }
    return true;
  }
  //document.onkeydown=keyhandler;

  function toggleMsg(spanID){
    var elem = document.getElementById(spanID);
    if(elem.style.visibility=="hidden"){
      elem.style.position = "relative";
      elem.style.visibility = "visible";
    }else{
      elem.style.visibility = "hidden";
      elem.style.position = "absolute";
    }
  }
  
  function ClientValidateSpecialRequest(sender, args){
    if(args.Value.length > 255)
      args.IsValid = false;
    else
      args.IsValid = true;
  }
  
  function ClientValidateComment(sender, args){
    if(args.Value.length > 2000)
      args.IsValid = false;
    else
      args.IsValid = true;
  }