Why is my CalendarExtender getting overlapped when rendered?

Question

I\'m working on a .NET web application and I\'m using a CalendarExtender control within it to have the user specify a date. For some reason, when I click the icon to display the

Answer 1

The only way i have found to resolve the issue in IE7 was to add some extra CSS to the page i was having problems with. No amount of z-indexing or div wrapping and re-styling was having an effect.

The following changes the controls stacking context.

.ajax__calendar_container
{
    position:static;
}

This does result in the calendar popup appearing vertically above the extender control instead of vertically below as normal. For me that was acceptable.