IE9 and Safari on Portal 7.31

HI,

I have a portal 7.31, and normally the browser IE9 and safari works, but in my portal i have some issue.

On IE9 -> i can't click on any Tab

On safari, -> the size on iview don't take all the page, but half or less than.

Somebody have a idea to resolve that.

Thanks for your help.

Nico