On thing I notice that could be the problem, the url in your page for the jQuery UI css has an extra /
In my sites and when I test locally I get the correct url
I think some browsers are more forgiving of url mistakes like that and some are not.
I'm not sure how that extra / is getting in there on your site since its working fine here but I suspect that is the problem. The sf-menu stuff is for the superfish menu and the css for that comes from jqueryUI not from the mojoportal css.
Hope it helps,