The updated ESTK scripting guides are now available online:
FM11
http://help.adobe.com/en_US/FrameMaker/11.0/Scripting/index.html (What's New at http://adobe.ly/1fHm1rP)
FM12
http://help.adobe.com/en_US/framemaker/scripting/index.html (What's New at http://adobe.ly/1cZC0Xm)