Hi,
1. Which browser are you using?
2. Are you facing same issue with any other games like internet spades?
I would suggest you to follow these methods and check.
Method 1: **** You may check if the issue appears in a clean boot state.
Refer this link: http://support.microsoft.com/kb/929135
If the issue gets resolved, check which non-Microsoft service is causing the problem; referring to the article and following other steps.
**Note:**After you check the functionality in clean boot configure Windows to use Normal startup using the step 7 suggested in the link mentioned above.
Method 2: Temporarily disable the security software and check if the game works fine.
Refer this link: Disable antivirus software
**http://windows.microsoft.com/en-US/windows7/Disable-antivirus-software**
**When you disable Antivirus:**Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable to attacks.
Method 3: If the above step fails, temporarily disable Windows firewall and check if the game works fine.
Refer this link: Turn Windows Firewall on or off
http://windows.microsoft.com/en-US/windows7/Turn-Windows-Firewall-on-or-off
Note: After checking the functionality turn on Windows Firewall.
Hope this helps!