Javascript error on pages without sharebar

If you take the sharebar off of pages and only leave it on posts it’s still including the js. This behavior is not recommended by wordrpess. Rather than rewrite this script I’ve added this line

if(!jQuery(sharebar).offset())return false;

of code to line 13 of sharebar.js to remove the error. It’s killing other scripts on my pages. Please fix this bug in the next version! Hopefully this helps others.