Internet Explorer Transparency Fail (already fixed in 7.x-3.x-dev)

Problem/Motivation

In Commons 3.2 there are gray boxes around the search block inputs in IE7,8 and 9. With the new style work in 3.x-dev this CSS is already corrected.

Proposed resolution

I searched but couldn't find any note of this in the issue queue, so I'm sharing one solution. I don't wish IE troubleshooting on my worst enemy, so perhaps this will save someone else the torture.

If you tack "filter:none;" onto the selectors ".block-search .selectBox-dropdown" and ".block-search .form-submit" this behavior is corrected in IE7, 8 & 9.

The current fix in 7.x-3.x-dev is slightly different than the attached patch, but works equally well, and may be more elegant. The changes there though involve more moving parts that aren't all in play in 3.2 so this patch may be useful for 3.2 users.

Remaining tasks

Not sure if this needs review since a patch is attached, or should simply be closed since it is fixed in the next release. Just trying to save other's future pain...