Here we offer the Maxthon Extension Development Guide and Packaging Tool (for Maxthon3, Maxthon Cloud Browser and Maxthon5). English Maxthon Extension SDK Update date:May 21, 2015 SDK runtime version:1.0.6 SDK document version:1.2.7 Mx-Extension-SDK.doc Changelog: 1.2.7:  - update stopOnClose 1.2.6: - add contextmenu api - add resize api - add toolbar support 1.2.3: - Update the description of def.json 1.2.2: - Describe the objects that support to p