Dialog: Shadow cleanup.

Dialog: Shadow cleanup.
  - Don't hide shadow during drag/resize in IE6 (let the user do this one their own).
  - Let users modify the shadow option after init.

.parents('.ui-dialog')
.bind('dragstart resizestart', function() {
	$(this).find('.ui-dialog-content').dialog('option', 'shadow', false);
})
.bind('dragstop resizestop', function() {
	$(this).find('.ui-dialog-content').dialog('option', 'shadow', true);
});