yes and no. these are your options;
* if old IE's are not important (how many % visits to those sites are on IE6 or IE7?): optimize javascript anyway
* if old IE's are important and you don't have time to investigate: do not optimize JS.
* if old IE's are important and you have a bit of time; exclude jquery.js and jquery.royalslider.min.js and see if that solves the problem. optionally also throw "look only in head" and/ or "force in head" in the mix.
frank