اريد ان يكون اسم العضو في التسجيل كذا

$(function(){if($('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')}})}})}});

/*codey.3rab.pro*/
#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;
}
/*css Posted by : a7medvirus*/