[Javascript] Javascript Compatibility Chart

[gregory.john.toland at census.gov]

Does anyone know where I can find a Javascript compatibility chart?  I want
to know what browsers support what objects, properties and methods.
I am testing my site in Opera 6.01 and I am finding the following:

If I set
         document.forms["frmProfile"].txtStep1.options[ 01 ].selected =
true;
then
            alert( document.forms["frmProfile"].txtStep1.options[ 01
].selected );
gives me false.

Any ideas?  Does Opera not support the .selected property to be settable?
I am finding the same thing with the .checked property?  Please help!


Gregory J Toland
CHM Inc.
Sr. Systems Architect
(301) 763-8058 (Office)
(703) 655-5766 (Mobile)
tolan002 at info.census.gov