On proxmox 1.X series is possible save password. I have 3 pmox machines then it´s pratical on safe admin machines allow save password on main screen. Here have some articles about it. checkout.
http://stackoverflow.com/questions/2944322/extjs-login-with-remember-me-functionality
http://www.sencha.com/forum/showthread.php?60807-Remember-password-in-browser
http://stackoverflow.com/questions/2944322/extjs-login-with-remember-me-functionality
http://www.sencha.com/forum/showthread.php?60807-Remember-password-in-browser