I am making a web site and I got it almost done when I upgraded my to IE7.

The drop down menu uses CSS technology and worked on IE6 for a long
time and I do not know when it stopped working.

here is a link:
http://www.macbiocom.com/novadelsite/about/index.htm
how can I get the css drop down nav to work again in IE 6 and below?

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Clarification of Question by vavoom-ga on 24 Nov 2006 12:15 PST

Has anyone looked at this issue? please let me know if there is
anything that I must provide to assist in obtaining an answer.

Here is  a link to the CSS
http://www.macbiocom.com/novadelsite/technology_files/common.css

the items in question are the drop down menu items

Sub nav is the div id, and the li are the ones that are not working on
IE6 and below.