event.blind.js effect will trigger script error in IE7

[cyberflohr]

I've tracked down the problem to the following lines of code within the effect.core.js script

The following lines within the createWrapper function will produce under certain circumstances NaN values for top & left.

var top = parseInt(el.css('top'), 10); if (top.constructor != Number) top = 'auto';
var left = parseInt(el.css('left'), 10); if (left.constructor != Number) left = 'auto';

fix:

var top = parseInt(el.css('top'), 10); if (isNaN(top)) top = 'auto';
var left = parseInt(el.css('left'), 10); if (isNaN(left)) left = 'auto';

[dmethvin]

This should be filed in the UI bug tracker if still relevant.

​http://dev.jqueryui.com