This error occurs after doing an update of php5-pam. In order to fix this if this happens, do the following:
Log in via ssh as root and try:
wget http://omv-extras.org/debian/pool/main/p/php5-pam/php5-pam_1.0.3-2_armhf.deb
dpkg -i php5-pam_1.0.3-2_armhf.deb
reboot
The reason for this post is due to the fact that not all major browsers support HTML input types yet.
This example limits the input to numbers.
<input onkeypress=’return event.charCode >= 48 && event.charCode<=57′>
This example limits the input to numbers, but, decimal works.
<input onkeypress=’return (event.charCode >= 48 && event.charCode<=57) || event.charCode==46′ >