css:z-index now not working correctly

[Martin Baker]

I have a number of complex websites using ie7-js.  They have all recently stopped working under IE

For an example please see http://malden-dsme.co.uk/members/society/index.asp

The sites are developed to be IE, Firefox and Chrome compatible. They have http://ie7-js.googlecode.com/svn/version/2.1(beta4)/IE9.js on all pages.

On all browsers, except IE7, if you hover the mouse over the left menu it gets wider and you can click the menu items.  It seems that an error is caused on IE7 by zIndexing problems introduced by ie7-js

If I remove ie7-js then the mousehover over the menu in Internet Explorer 7 also works OK just like the rest but obviously other functionality is deficient.

The problem is not seen on IE8.

So I am stuck in catch 22 - in that if I take out the tool, my pages dont work, and if I leave it in, all the IE7 users are completely unable to access the application