How to do two or more rsyncs with one password?

[joe at actionline.com]

How can one do two or more rsyncs with entering the password just once?

I've set up a script that I named copy2blue to copy three specified
subdirectories to my web hosted space, and it works fine, except it
asks me to enter the password for each 'rsync' command.

How can I modify this so it will only ask for the password once?

cd /dir/subdir1
rsync -avHp --progress subdir1 webhost at box000.bluehost.com:www/subdir1/

cd /dir/subdir2
rsync -avHp --progress subdir2 webhost at box000.bluehost.com:www/subdir2/

cd /dir/subdir3
rsync -avHp --progress subdir3 webhost at box000.bluehost.com:www/subdir3/