
Probably you are using an MS Internet Explorer Version 6.
I recommend you to upgrade your Window Internet Explorer Version from 6 into 7.
Then you would not have that kind of problems. The Version 7 is a much better one.
Or click the "Tool(T)" of the Explorer's menu and then select the "Internet Options (O)"
and click the "Privacy" and select the setting the "LOW" (Please not MEDIUM) and confirm please. Thanks!