IE6: components in iframes will not allow direct focus.

Main page contains a stack panel, with one of the panels
being a frame, and command link used to switch panels.
Please note that we use Faceletes and the issue occur in IE only.

1) Set concurrentDomViews to true;
2) Set TestBean as a session scope bean:

<managed-bean>
      <managed-bean-name>testBean</managed-bean-name>
      <managed-bean-class>TestBean</managed-bean-class>
      <managed-bean-scope>session</managed-bean-scope>
  </managed-bean>

3) Change faces default suffix to ".ifc" (or rename ifc files);
4) Build and deploy. Access "main.ifc". Use "Switch" command link to
switch between two panels with input boxes.

5) Switch to panel 2 (iframe). Set focus on input text box. Click
"Switch" command link. Focus can not be set on any input boxes on both
panels after that.

This only happens if "Switch" is a command link. Using command button
does not cause the issue.