[ka-Map-users] PNG24 Transparency in IE

Delfos, Jacob jacob.delfos at maunsell.com
Thu Mar 9 19:22:39 EST 2006

As an alternative, you can use GIF for your transparent layers, which comes out smaller than 8 or 24bit PNG. You can then use JPEG for your 24bit layers (providing you don't need your 24bit layers to be transparent). Using the "imageformat" parameter in the metadata, you can force these image formats on an individual layer basis.


	From: ka-map-users-bounces at lists.maptools.org [mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of Shoaib Burq
	Sent: 10 March 2006 05:23
	To: José Manuel Cerrejón González
	Cc: ka-Map-users at lists.maptools.org
	Subject: Re: [ka-Map-users] PNG24 Transparency in IE

		1) How did you configure your mapfile to have transparency on Firefox? 
		All my layers appears opaque on FireFox.

	In my mapfile I set
	and config.php
	  "deakinPNG24" => array( "Deakin Marine Map (PNG24)", "/opt/Mapfiles/deakinbathy.map",
	                     array( 300000, 100000, 30000, 20000, 10000, 5000, 2000 ),
	That's about it.... 

		2) Can I fix this problem with IE and PNG24, changing the format file to

	I tried that but jpeg didn't help
	still scratching my head about 24 bit images and transparancy in IE :(

		Thk 4 all.


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