diff --git a/scroll_to_top.js b/scroll_to_top.js
index 42ded55..f73bc5c 100644
--- a/scroll_to_top.js
+++ b/scroll_to_top.js
@@ -40,12 +40,14 @@ Drupal.behaviors.scroll_to_top = {
 		});
 
 		// scroll body to 0px on click
-		$('#back-top a').click(function () {
-			$('body,html').animate({
-				scrollTop: 0
-			}, 800);
-			return false;
-		});
+     $('#back-top a', context).once(function() {
+       $(this).click(function () {
+         $('body,html').animate({
+           scrollTop: 0
+         }, 800);
+         return false;
+       });
+     });
 	});
 	}
 };