Hi,
It is not related to any coding instead it is just an browser setting.
Try the methods listed below
Method 1:
Step 1: Change Internet Explorer Security settings
http://windows.microsoft.com/en-US/windows-vista/Change-Internet-Explorer-Security-settings
Step 2: Add the website to trusted websites list.
http://windows.microsoft.com/en-US/windows-vista/Security-zones-adding-or-removing-websites
Method 2:
I would suggest you to run the Internet Explorer in no add-ons mode and check if it helps. To do so follow the step 4 from the below link:
If that does not work, follow all the troubleshooting steps mentioned in the above link.
You may also refer the link:
Thanks
KH