onMouseOut not working

[drumgor]

In my application as in the examples of menu for applications, when you move the mouse off a menu or sub menu, the menus remain in place obscuring part of the underlying page.

I have added the suggested line
DHTMLSuite.commonObj.addEvent(document.documentElement,"mouseout",this.hideSubMenus);
in line 2336 but this has no effect.

Any solutions to getting the menus to disappear once the mouse moves off them gratefully accepted.