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 runtime.post support to p