I have had an opportunity to track down some of the issues using IE8 with the Hyperion Suite 11.x -- I have not extensively ran through all functions with IE8 so there may be some additional modifications that are required however this seems to resolve the major issue(s).

The main issue is the Bindows code is settings the DHTML zIndex property to null in some places. To avoid this you can patch the _p.setZIndex function as follows:
OLD Code:
_p.setZIndex=function(nZIndex){this.setStyleProperty("zIndex",nZIndex);

NEW Code:
_p.setZIndex=function(nZIndex){*if (nZindex==null) this.setStyleProperty("zIndex",0); else* this.setStyleProperty("zIndex",nZIndex);}

This code is contained in the core.ie.js files for most components and the core.js files for HFM. Back up the originals before making modifications.

Once you have modified these on the client side:
1) In IE8 you select Tools / Compatibility View Settings / Display all websites in Compatibility View (NOTE you may not even need to use the Compatibility View setting)
2) In IE8 Tools / Internet Options / Clear Browsing history.

One caveat is this is not an Oracle supported solution – the Oracle stance will be to back out IE8 and install IE7. Some Oracle updates will likely remove the code updates by laying down the original files.

Enjoy,

John

The *'s in prior post should not be there -- I copied this from my Oracle Forum Posting which uses those as bold indicators.

NEW Code:
_p.setZIndex=function(nZIndex){if (nZindex==null) this.setStyleProperty("zIndex",0); else this.setStyleProperty("zIndex",nZIndex);}

Regards,

John

This is nice, thx.

..if only Safari or Chrome could work!...

Had the case incorrect in the if (nZIndex==null)....

NEW Code:
_p.setZIndex=function(nZIndex){if (nZIndex==null) this.setStyleProperty("zIndex",0); else this.setStyleProperty("zIndex",nZIndex);}

We've tested this now with Shared Services provisioning, HFM, Planning, EPMA and this one change seems to do the trick for all functions.

Wished you could edit prior posts. I have kept the Oracle Forum thread up to date.

Enjoy,

John