Jquery Mega Menu

I have been using the menu ( https://javascriptkit.com/script/scr...megamenu.shtml) for 3 years now very successfully. Just obtained SSL certificate and the menu stopped working. Found that if I changed the source "http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" to read https://... the menu started working again BUT as I hover over the anchor point I get a p'Page not found' error briefly, although the menu does continue to work. Not sure if this is linked but have experienced a HUGE rise in 404 errors over past 48 hours. Has there been an update to this script since 2009, does the script need modifying, is the version of js out of date. This is my first posting and feeling very much out of my comfort zone on this issue.

This may be a 'cache error'. Do the 404 errors still appear after you have emptied the history?