Opening a Dialog from a image hotspot in IE Compatibility mode

When I open a dialog box in IE10 Compatibility mode from a image map hotspot and attempt to close it, I get the following error:

Unhandled exception at line 132, column 3 in http://localhost:50723/Scripts/jquery-ui-1.10.0.js

0x800a138f - JavaScript runtime error: Unable to get property 'name' of undefined or null reference

I have traced the error to the image map, it determines in IE Compat that the element node name is "area" in non compat mode it finds it as body and works fine. The area map doesn't seem to find a parentNode which is the null its complaining about. This problem did not exist in the previous version. For my purposes I added a try/catch around the area portion of the code as such and I can continue without problem.

function focusable(element, isTabIndexNotNaN) {

try {

var map, mapName, img,

nodeName = element.nodeName.toLowerCase();

if ("area" === nodeName) {

map = element.parentNode;

mapName = map.name;

if (!element.href || !mapName || map.nodeName.toLowerCase() !== "map") {

return false;

}

img = $("img[usemap=#" + mapName + "]")[0];

return !!img && visible(img);

}

} catch (e) { };

return ( /input|select|textarea|button|object/.test( nodeName ) ?

!element.disabled :

"a" === nodeName ?

element.href || isTabIndexNotNaN :

isTabIndexNotNaN) &&

// the element and all of its ancestors must be visible

visible( element );

}

Not sure if this is a good fix or not, but that's what I did so far and it seems to work fine.