W3 cache AND rotating random banners on the homepage

Hello!

My homepage’s sidebar consists of 10 banners that mix at every page reload. Once i turn the W3 cache on, they stop mixing of course and I only get them in one order all the time which is not good.

I tried the mfunc stuff but it doesn’t work:

For example if I enter this simple code in my sidebar, I get the same “random” number everytime I refresh. So I have to turn off the plugin to have mixed banners on every reload.

<!– MFUNC –>
<? echo rand(); ?>
<!– /mfunc –>

I know you can use iframe or javascript BUT 25% of my visitors don’t have JS according to analytics…and iframes won’t work as expected in every browser (not to talk about IE! ?? .

SO…… is it still possible to use random banners AND w3 cache in the same time? (which is great btw, the website is laser fast with it).

Thank you!