Wacky behavior using image map w/ show/hide layers

[backspin]

I'm trying to make a show/hide layer behavior, where if you mouse over part of a large image (an image mapped area), the whole image will change. It works, but when viewing in the browser, as the mouse moves over the mapped area, the hidden layer flashes visible/not/visible/not... only if the mouse is moving. It's as if there are actually little holes in the mapped area, so the mouse skips from making the behavior happen to not, and back again, as it moves across. Here's a link for the demo:

http://epic.cuir.uwm.edu/mvbi

the only map currently active is over the top circle.

Anybody know why this is happening? I like the action, but it needs to flip once on mouseover & then stay there!

 

[schase]

What is the code for onMouseover? "Damn the torpedoes, full speed ahead!"

-Adm. James Farragut

Stuart

 

[backspin]

<area shape=&quot;poly&quot; coords=&quot;188,46,141,74,140,107,186,127,217,138,295,108,287,69,234,44&quot; href=&quot;#&quot; onMouseOver=&quot;MM_showHideLayers('purple','','show');MM_showHideLayers('startcircles','','hide')&quot; onMouseOut=&quot;MM_showHideLayers('purple','','hide');MM_showHideLayers('startcircles','','show')&quot;>