How can I detect image orientation (portrait vs. landscape) after its loaded then rotate stage accordingly?

How can I detect image orientation (portrait vs. landscape) after its
loaded then rotate stage accordingly?

References

Reference NO 1

http://stackoverflow.com/questions/15193168/how-can-i-detect-image-orientation-portrait-vs-landscape-after-its-loaded-the

Reference NO 2

http://stackoverflow.com/questions/15176661/how-do-i-get-this-image-url-to-display-in-flashbuilder-4-5-using-bindable-and-a

Reference NO 3

http://stackoverflow.com/questions/8578652/recalculate-group-height-after-window-resize

Reference NO 4

http://stackoverflow.com/questions/11414966/can-not-resolve-a-multiname-reference-unambiguously-with-image-embed

Reference NO 5

http://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/RespondingtoDeviceOrientationChanges/RespondingtoDeviceOrientationChanges.html

Reference NO 6

http://coding.smashingmagazine.com/2011/01/12/guidelines-for-responsive-web-design/

Reference NO 7

http://www.flvhosting.com/help/viewthread.php?id=293

Reference NO 8

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