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