Web page Accesskey

[lokavi8182]

I would like to make the access key of the menus as common for all the browsers.
For eg.
<a href="Main.jsp" acceskey="M"><U >M</U>ain</a>
In IE Alt+A works well.
In Mozilla , Alt+Shift+A works well. Instead of Alt+Shift+A i would like to use Alt + A.


what are the things i have to follow


Thanks in advance
Logesh