$.fn.toggleField = function(){
  return this.each(function(){
    $this = $(this);
    if($this.val() == '' && $this.attr('title') != ''){
      $this.val($this.attr('title'));
    }
    $this.bind('focus blur', function(){
      if($this.val() == $this.attr('title')){
        $this.val('');
      }else if($this.val() == '' || $this.val() == ' '){
        $this.val($this.attr('title'));
      }
    });
  });
};