close button not show

[Lee-SDU]

var url = rainbow.current.model.url + "/" + row[idName] + '?_mode=inline&bust=' + (new Date()).getTime(); var a = $('<a href="#">点击查看</a>'); $img = $('<div id="div-bPopup"></div>').attr('max-width','450px').attr('max-height','450px'); a.on('click',function(e){ e.preventDefault(); $img.bPopup({ content:'image', loadUrl:url, zIndex: 10000, modalClose: true }); });
The above is my code. When a's 'clikc' event triggered, the picture shows. But the question is that the close button x doesn't show. What is wrong with it. tks!