How can I disable right clik menu in the Web Player? (I'm using Unity 2.6x)
Best you can do is lock the cursor. Read here: http://unity3d.com/support/documentation/ScriptReference/Screen-lockCursor.html
But because in a web build, hitting ESC will always free the cursor, all you really need to do is add `Screen.lockCursor = true;` to the Update function of any single script, without the other stuff.
You need to pass the disableContextMenu parameter to the unity embed in the html file. See the reference of embed parameters.
Here's a complete solution for right click detection, including how to disable context menu for web player games: http://blog.gfx47.com/2011/04/04/detect-right-click-on-game-objects-in-unity3d/ Hope that will help! ;)