Cross-Site Scripting is an Internet Explorer feature which protects you from XSS attacks that come from a website. In your case the filter is activated and based on some code (although the website is clean) found in website's files. The filter activates itself and disables any request. Disabling this features may compromise your computer while browsing infected websites using Internet Explorer and shouldn't be deactivated.
If you believe that the website is safe you can disable it while playing.
To disable this feature, please, follow these steps:
- In Internet Explorer click
Tools
found on Menu bar then Internet options
- Navigate to
Security
, chose Internet
and click Custom Level
- Scroll down and tick
Disable
under Enable XSS filter
- Hit Ok, and reload the page with the problem.