diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index 6ac978568..fb6bb6864 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -1501,9 +1501,60 @@ function pop_box_new(value, Width, Height){
     $('#ajax-modal').siblings().remove();
     $('#ajax-modal').parent().css({"top": h+"px","left": w+"px","padding":"0","border":"none","position":"fixed"});
     $('#ajax-modal').css({"padding":"0"});
+    $('#ajax-modal').parent().attr("id","popupWrap");
 
     //拖拽
+    function Drag(id) {
+        this.div = document.getElementById(id);
+        if (this.div) {
+            this.div.style.cursor = "move";
+            this.div.style.position = "fixed";
+        }
+        this.disX = 0;
+        this.disY = 0;
+        var _this = this;
+        this.div.onmousedown = function (evt) {
+            _this.getDistance(evt);
+            document.onmousemove = function (evt) {
+                _this.setPosition(evt);
+            }
+            _this.div.onmouseup = function () {
+                _this.clearEvent();
+            }
+        }
+    }
+    Drag.prototype.getDistance = function (evt) {
+        var oEvent = evt || event;
+        this.disX = oEvent.clientX - this.div.offsetLeft;
+        this.disY = oEvent.clientY - this.div.offsetTop;
+    }
+    Drag.prototype.setPosition = function (evt) {
+        var oEvent = evt || event;
+        var l = oEvent.clientX - this.disX;
+        var t = oEvent.clientY - this.disY;
+        if (l <= 0) {
+            l = 0;
+        }
+        else if (l >= document.documentElement.clientWidth - this.div.offsetWidth) {
+            l = document.documentElement.clientWidth - this.div.offsetWidth;
+        }
+        if (t <= 0) {
+            t = 0;
+        }
+        else if (t >= document.documentElement.clientHeight - this.div.offsetHeight) {
+            t = document.documentElement.clientHeight - this.div.offsetHeight;
+        }
+        this.div.style.left = l + "px";
+        this.div.style.top = t + "px";
+    }
+    Drag.prototype.clearEvent = function () {
+        this.div.onmouseup = null;
+        document.onmousemove = null;
+    }
 
+    window.onload = function () {
+        new Drag("popupWrap");
+    }
 }
 
 // 公共提示弹框样式