What is the Firefox browser behavior if there is a 1024 bit end entity cert after Dec 31m 2013. ( Error/ Warning/Block site

"We consider the following algorithms and key sizes to be acceptable and supported in Mozilla products:

SHA-1 (until a practical collision attack against SHA-1 certificates is imminent);
SHA-256, SHA-384, SHA-512;
Elliptic Curve Digital Signature Algorithm (using ANSI X9.62) over SECG and NIST named curves P-256, P-384, and P-512;
RSA 2048 bits or higher; and
RSA 1024 bits (only until December 31, 2013)."

hello, probably some variant of the [["This Connection is Untrusted" error message appears - What to do|This Connection is Untrusted]] error page will be shown. for supported means of encryption please refer to the following site: http://www.mozilla.org/projects/security/certs/policy/MaintenancePolicy.html "We consider the following algorithms and key sizes to be acceptable and supported in Mozilla products: SHA-1 (until a practical collision attack against SHA-1 certificates is imminent); SHA-256, SHA-384, SHA-512; Elliptic Curve Digital Signature Algorithm (using ANSI X9.62) over SECG and NIST named curves P-256, P-384, and P-512; RSA 2048 bits or higher; and RSA 1024 bits (only until December 31, 2013)."