Tuesday, August 15th, 2006
There was a big hubbub when we found out that IE 7’s XHR support isnâ€™t really native.
Jose Jeria did some poking around to see if transparent PNG support is native or not:
While developing an intranet for IE 6 only (yes, trust me, it sucks) I noticed that it was not possible to combine certain filters. Transparent PNG:s were used for buttons that needed to look disabled. A combination of the AlphaImageLoader with the Alpha filter should have done the trick, but it didnâ€™t seem to like this combination. It should have looked like this:
But IE failed rendering the PNG with opacity applied to it, and instead it rendered it like this:
This must be a bug in IEâ€™s filter implementation. So what I did next was to test the same image with opacity applied to it in IE 7, since they now claim they have native transparent PNG support. Butâ€¦ the results were exactly the same. Which makes you wonder if itâ€™s not just the same filter as in IE 6 being applied under the hood
Posted by Dion Almaer at 11:39 am