Add New Button Back To Top for Your Blogger/Blogspot V2.

Step 1: Login to your blogger/blogspot Dashboard and go to Design --&-- Page Element's.

Step 2: Click on "Add a Gadget" on the sidebar.

Step 3: Select 'HTML/Javascript' and add the one of code given below and click save.

Click Here For Copy The Code.

<!--Back to top Start itbooster.blogspot.com-->
<a style="display:scroll;position:fixed;bottom:5px;right:5px;" href="#" title="Back to Top"><img onmouseover="this.src=&#39;https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOXiNbY9F_eYXrLka7A5guyBOPsftn4dj0Ifaal3kgi7GH-Bpk3ezZVADwiX9o2ic1WvgQIqB02f7VShXN8gKUklQ1th_CFB82V2PQGETKtyhF7vaupaeyHMoYYTH-KvJaNIzOrow6HTo/&#39;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjG0DOM9-9kHdlPyabaGaH17Rt2nYCPdqaaJ1P6gHLQdYmFo04g6FF0n4cZqg-C2tCcwEr_w-5bQhyPtujvLy9htjGWZKw9irPhRteaVPFL309sKeJebM8WGx0DjkIUTBlZqrlMHGE1f20/" onmouseout="this.src=&#39;https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjG0DOM9-9kHdlPyabaGaH17Rt2nYCPdqaaJ1P6gHLQdYmFo04g6FF0n4cZqg-C2tCcwEr_w-5bQhyPtujvLy9htjGWZKw9irPhRteaVPFL309sKeJebM8WGx0DjkIUTBlZqrlMHGE1f20/&#39;" /></a>
<!--Back to top End itbooster.blogspot.com-->

Note: Change Back to Top Button name as you like.

Step 4: Now You are done.

Thanks