修复购物车面板穿透滑动问题

@@ -90,13 +90,15 @@ function preventDefault(event) {
 }
 
 function disableScroll(e) {
-    if (window.addEventListener) {// older FF
+
+    // older FF
+    if (window.addEventListener) {
         window.addEventListener('DOMMouseScroll', preventDefault, false);
     }
 
     window.onwheel = preventDefault; // modern standard
     window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
-    window.ontouchmove  = preventDefault; // mobile
+    window.ontouchmove = preventDefault; // mobile
 }
 
 function enableScroll() {