Prevent spurious resizing on IE due to resize events on the browser window even though the viewport hasn't changed size. Fixes nestedStack.html test case on IE (refs #8799) and helps reduce redundant resizing in general (refs #8313).
Prevent spurious resizing on IE due to resize events on the browser window even though the viewport hasn't changed size.
Fixes nestedStack.html test case on IE (refs #8799) and helps reduce redundant resizing in general (refs #8313).

In the future, it would be more efficient to have a single listener for viewport onresize events, detecting which ones are real size changes and then publishing a topic to notify top level widgets that they may need to resize. 

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@16917 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful