حذار من إضافة هذين الكودين الى مواقعكم

$(function(){if($('input#username_reg').length){$('input#username_reg').keyup(function(){if($('#username_reg').attr('value')==''){$('input#username_reg').removeClass('okusername')}else{url='/search?mode=searchuser&fieldname=username&search_username='+encodeURIComponent($('input#username_reg').val());$.get(url,function(data){if($('select[name=username_list] option',data).val().toLowerCase()==$('input#username_reg').val().toLowerCase()){$('input#username_reg').removeClass('okusername')}else{$('input#username_reg').addClass('okusername')}})}})}});

    #username_reg {
      background-image: url(http://i45.servimg.com/u/f45/15/95/28/21/warnin10.png);
      background-repeat: no-repeat;
      background-position: left;
          }
    #username_reg {
     height: 35px;
      width: 145px;  }

    #username_reg.okusername {
      background-image: url(http://i45.servimg.com/u/f45/15/95/28/21/true11.png);
      background-repeat: no-repeat;
      background-position:  left;

    }
     #username_reg {
    border:2px solid red!important;
    }
    #username_reg.okusername {
    border:2px solid green!important;
    }