Hi, I currently have some jQuery code where my web pages slideUp/Down when a link is clicked on the menu, so loading of a page is not needed. Now in Firefox and IE it seems smooth like butter, but when I check it in Chrome/Safari its not that smooth.

cant tell without code or an example

I usually find that Firefox is the one struggling on JavaScript-heavy pages. I swear there's a memory leak somewhere...

 

Anyway, this sounds like a quirk of browsers / machines. You could try slowing the animation down which might give the browser more time to render the animation. Personally, if it's not a major problem I'd be inclined to ignore it.