diff --git a/rc-busness/pages/productdetails/producted.vue b/rc-busness/pages/productdetails/producted.vue
index 76b021e4..cad9f780 100644
--- a/rc-busness/pages/productdetails/producted.vue
+++ b/rc-busness/pages/productdetails/producted.vue
@@ -4,7 +4,7 @@
     <Myheader></Myheader>
     <unlogin></unlogin>
      <tabs></tabs>
-     <div class="online" ></div>
+     <div class="online" id="fixed-catbar-seperator"></div>
 	<div class="rc-top"></div>
     <div class="rc-usermain ts-product-detail rc-max-width--xl rc-layout-container rc-two-column rc-border-bottom rc-border-colour--brand4">
 	<!--
@@ -148,7 +148,7 @@
 			</ul>
 			<div class="tuntop" @click="toTop" v-show="gotop">
 				<img src="../../assets/image/turntop.png" alt="">
-				回到顶部
+				<span>回到顶部</span>
 			</div>
         </div>
          <Myfooter v-on:litentop='showmesg'></Myfooter>
@@ -356,9 +356,10 @@ this.usermessage= JSON.parse(localStorage.getItem("userInfo"));
     ...mapMutations(["changemessage"]),
       handleScroll(e) 
 	{
-		let fixedCatbarSeperator = document.getElementById("fixed-catbar-seperator");
+		let fixedCatbarSeperator = document.querySelector("#fixed-catbar-seperator");
 		let scrolltop = document.documentElement.scrollTop || document.body.scrollTop;
-		if((scrolltop-fixedCatbarSeperator.offsetTop))
+   if(fixedCatbarSeperator!=='null' ){
+        	if((scrolltop-fixedCatbarSeperator.offsetTop))
 		{
 			this.gotop = true
 		}
@@ -366,6 +367,8 @@ this.usermessage= JSON.parse(localStorage.getItem("userInfo"));
 		{
 			this.gotop = false;
 		}
+   }
+	
     },
       lianxi(item,index){
              console.log(item,index);