jquery + IE + animation = slowness

[motil]

Hi guys,

i have a web page that pulls quite a lot of animations (fade in/out included)
this page is also contains quite a lot elements (most of them are <options>) which are absolutely required, the thing is that this page works perfectly under firefox / chrome / opera and safari, its even works well with IE 8 (a bit slowly but thats ok) but if i switch to quirk mode in IE8 which i was told that it actually mean IE 7 the page is become VERY slowly, this is not the first time i see problem with jQuery animation and IE, i was wondering if there is any fix for this problem.

Best regards,
Motil.

[techgnome]

Might want to try with an actual IE7 machine, see if it still happens... the slowdown might be due to it having to go through additional parsing. But that's just a guess.

-tg

[SambaNeko]

Can you post a link to the page? Or post your HTML / CSS / jQuery for the page?

[Merri]

If the element grows in all directions (on all sides) and alphatransparency is included then you're very likely to have slowdown on older browsers. It isn't all that long ago that browsers such as Opera died if you had more than one "special" effect going on in a page, like I had this somewhat simple page made in late 2008 that just had a small slightly transparent 1x1px PNG image repeated on about half a page and adding an animated fading element on top of that killed half the browsers. So I couldn't do that. Luckily it wasn't a crucial element of design.