ie6 filter clearing fix

[tagliala]

Are we in 2012? Yes we are!

This is a "man vs machine" challenge rather than a real issue.

I'm working on a fork of Leaflet based on the master branch and I noticed that when you use the prehistoric IE6, marker icons disappears.

This is because the setOpacity method of DomUtil class resets the filter when opacity is 1.

Nice, but in this way it resets the AlphaImageLoader filter too, and it will result in an empty icon

Hope it helps

Best regards

GT

[mourner]

Thanks! The only issue that may appear is when you try to call, say, setOpacity(0.5) in IE6 several times - what will happen?

[tagliala]

http://img694.imageshack.us/img694/5754/nuovo2.png

it works the same. Don't care about the gray background: I'm working on icon sprites and I don't care about IE6 support :)

(the red marker is loaded as a single image)

I'm working on this if you are interested:
https://github.com/tagliala/Leaflet/tree/icon-sprite
(CSS icon sprite section of readme)

[ajbeaven]

This breaks popups in IE8 and earlier and apparently also this guys issue https://github.com/CloudMade/Leaflet/pull/600. What's the lesser of two evils?

[tagliala]

Of course IE8 has priority. This patch could be improved with a regular expression on filter property, but this is not the case: simply let IE6 die :)

Sorry for causing unwanted side effects