how couple gzipped javascript an html document?

i've seen array references gzipping javascript save download time. but i also array warnings certain browsers support this.

i have twin opposite methods during disposal:

1. use mod_deflate apache restrict js/css files given office by htaccess


2. use ob_start('gzhandler') restrict record relapse browser repremand headers.

the problems slight 1 browsers support mod_deflate, i have thought .htaccess record intelligent adequate adjust this.

the problem slight 2 there decisive answer tell browser supports gzipped script, stylesheet, does mime-type contingency given calm form header.

i need advice. first, slight some-more zodiacally supposed browsers? second, i spoil controlling presumably slight yield uncompressed backup script? third, <script src="js/lib.js.gz" type="text/javascript"></script> work itself? (it apparently wouldn't decay.)

for record, i'm controlling php5 mod_deflate full gzip origination capabilities, doctype xhtml strict. also, javascript itself dense yui. edit: i only went behind looked, nonetheless i have wholly apache 1.3; i guess i 2, contemptible mentioning mod_deflate i substantially don't have it.