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Vic Emond

Tweening CSS alpha on text with dropshadow filter in IE9

Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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If I apply an alpha tween:


TweenMax.to($('.myElementWithTextShadow'), 0.5, {css:{autoAlpha:1}});


...to text that has a text-shadow/filter:dropshadow - in IE9 - I see a black background behind the element as it fades in. It goes away once the tween has completed.


Any thoughts on this?

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That appears to be a bug in IE and is unrelated to CSSPlugin or TweenLite/Max. Here's the proof: don't do any tweening and apply these CSS styles to an object and you'll see the oddity:


text-shadow:4px 4px #900;
filter: progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#900');


If anyone knows of a workaround, please chime in.

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