Rsync example on webpage

I was trying to implement a 30 day incremental backup system based  
off of example one on:
http://samba.anu.edu.au/rsync/examples.html

Here is my code:

#!/bin/sh

# This script does personal backups to a rsync backup server. You  
will end up
# with a monthly day rotating incremental backup. The incrementals  
will go
# into subdirectories named after the day of the week, and the current
# full backup goes into a directory called "current"
# tridge@xxxxxxxxxxxxx

# directory to backup
BDIR=/var/www

# excludes file - this contains a wildcard pattern per line of files  
to exclude
EXCLUDES='/var/www/.bash_history'

# the name of the backup machine
BSERVER=myservername.com


########################################################################

BACKUPDIR=`date +%d`
OPTS="--force --ignore-errors --delete-excluded
       --delete --backup --backup-dir=/$BACKUPDIR -a"

export PATH=$PATH:/bin:/usr/bin:/usr/local/bin

# the following line clears the last weeks incremental directory
[ -d $HOME/emptydir ] || mkdir $HOME/emptydir
rsync --delete -a $HOME/emptydir/ $BSERVER:$BACKUPDIR
rmdir $HOME/emptydir

# now the actual transfer
rsync $OPTS $BDIR $BSERVER:current



my problem is..  I cannot get it to incremential backup to seperate  
folders.. right now it does full/incremental to the 'current' folder.

Yes, I can change the last line to remove :current and replace it  
with $BackupDIR.. but then it just does full backups all the time..  
Please bare in mind, this is almost the identical code on the  
website.. So I would think it should work OOB.

thanks

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