修改课程--匿评提示窗口有两个关闭窗口的图标按钮

app/views/bids/_homework.html.erb

@@ -36,6 +36,7 @@
                     $('#ajax-modal').html('<%= escape_javascript(render :partial => 'homework_attach/praise_alert') %>');
                     showModal('ajax-modal', '480px');
                     $('#ajax-modal').css('height','240px');
+                    $('#ajax-modal').siblings().remove();
                     $('#ajax-modal').before("<span style='float: right;cursor:pointer;'>" +
                             "<a href='#' onclick='hiddent_alert_model();'><img src='/images/bid/close.png' width='26px' height='26px' /></a></span>");
                     $('#ajax-modal').parent().css("top","").css("left","").css("width","511");