How to check Domino website for XSS?

I have to check possible vulnerability on website on Domino and this is my first experience, so here are some links I found useful:

http://www.codestore.net/store.nsf/unid/BLOG-20080926
http://www-01.ibm.com/support/docview.wss?rs=477&uid=swg21247201
http://www.stevecastledine.com/sc.nsf/dx/domino-blog-xss-warning
http://it.toolbox.com/blogs/enterprise-solutions/xss-vulnerability-in-lotus-notesdomino-url-handler-3439