need to change duration/interval of Calendar in web client

[seth]

Enquer had suggested the following in October to change the height/spread in the Calendar:

$cd tomcat/webapps/zimbra/js
$vi ZimbraMail_all.js
//Go to line 48598
//modify HOUR_HEIGHT var to 84 instead of 42
$cp ZimbraMail_all.js ZimbraMail_all.js.
$gzip -S zgz ZimbraMail_all.js.

Can't get this to work. Any help? This is extremely important. Having only 1/2 hour slots doesn't work for us. Even the one hour appointments appear truncated. Need to be able to visually show appt intervals of 15 minutes and still be able to read the appt.

Thanks in advance.

Seth