diff --git a/frontend/web/assets/js/popUps.js b/frontend/web/assets/js/popUps.js
index d25f3ed..585bd00 100644
--- a/frontend/web/assets/js/popUps.js
+++ b/frontend/web/assets/js/popUps.js
@@ -10,12 +10,13 @@ $(function(){
         _that.find(".nextPage").click(function () {
             _that.addClass("unchoose");
             $(".model-bg").eq(i+1).removeClass("unchoose");
+            var a=$(".model-bg").last().toggleClass("unchoose");
+            if(!a){
+                $(this).addClass('unchoose');
+                $(".model_wrap").hide();
+                $(".model-bg").addClass("unchoose");
+            }
         });
-        _that.last().click(function () {
-            $(this).addClass('unchoose');
-            $(".model_wrap").hide();
-            $(".model-bg").addClass("unchoose");
-        })
     });
 
     $(".jump").click(function () {