[OpenLayers-Users] Ie8 Popup Opacity issues

[Frank Broniewski]

Hello list,

we're having some trouble here with Ie8 and popup opacity issues. We use 
our own alpha-transparent background-image for popups. Works fine, 
except in Ie8, where the background is replaced by a grey color. Using 
the debugger, the filter property set by the 
OpenLayers.Popup.setOpacity() method seems to be the cause for this. 
Disabling it in the debugger makes the transparency work with the png.

I am not 100% sure what is causing this behavior, but with Ie8, a new 
method for setting opacity was introduced, see
http://msdn.microsoft.com/en-gb/library/ms530752.aspx
which is missing in the setOpacity() method. And there are some more 
issues with Ie and opacity, see the links mentioned below [1,2,3]


I don't know the reason for setting opacity (and others, border, 
bg-color) by javascript, but would'nt it be better to set them by css 
altogether?


Frank


Some more links
[1] 
http://blogs.msdn.com/ie/archive/2008/09/08/microsoft-css-vendor-extensions.aspx
[2] http://www.wickham43.supanet.com/tutorial/opacity.html
[3] http://realtech.burningbird.net/graphics/css/opacity-returns-ie8



-- 
Frank BRONIEWSKI

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