[ka-Map-users] Technical alternatives for SVG on IE

[Robert Thau]

Steve Lime writes:
 > That'd be an interesting alternative to the walter zorn libs. Hmmm...
 > 
 > >>> Paul Spencer <pspencer at dmsolutions.ca> 4/28/2006 9:42 AM >>>
 > There is also <canvas> for firefox/safari and a canvas-in-ie that  
 > wraps canvas syntax around vml for ie (http://me.eae.net/archive/ 
 > 2005/12/29/canvas-in-ie/).  And reading the comments there is also an  
 > SVG for IE wrapper (http://starkravingfinkle.org/blog/2006/03/svg-in- 
 > ie/)

I tried playing with <canvas> in Firefox.  Works fine if you're just
drawing an essentially static overlay.  The only way I could think of
to get mouse sensitivity, though, was to overlay a transparent image
with an <imagemap>, and add <area> tags for the mouse sensitive areas.
It works, but for large numbers of overlays it can be slow.  On the
other hand, I'm not sure what else you *can* do to display
mouse-sensitive polygonal areas in Safari...

Robert Thau
rst at alum.mit.edu