To Reproduce:

1. Using firefox downloads window clicked on the *.dmg file
2. Waited for the Oracle JDK 1.7.0_04 (attached) window to popup.
3. In that window it is clearly mentioned to double click on the icon to install.

Expected:

There should be a way to move focus to this icon, in order to install using the keyboard.

Actual:

There is no way to install using keyboard

Command + Tab is not highlighting the installation window. If there are any hidden keystokes to initiate the installation, that needs to be added (with the double click on icon)