Maxthon 3.4.3.1200 Beta

# New Feature:
* Updated JavaScript engine
# Fixes:
* Main Frame
- It could not display search suggestions in Search Bar
- Needed to click Boss Key twice to hide the browser window
- The browser would exit if locked tab when enabled Minimize to System Tray
- Problem when importing Chrome bookmarsk
- Split line display problem when using Split Screen
- No right-click menu in Downloader dialog box
- Language display problem in installation directory right-click menu
- Could not open a new browser window by clicking the icon in Task Bar
* Webkit Core
- Problem caused by flash when closed pages
- Crash problem when closed Maxthon
- Freeze problem when switching language in Facebook pages
- Could not save password and verify code in some sites
- mailto protocol jump problem if not installing mail client
- Video play window popuped when logged in Maxthon Skydrive
- "Find in Page" problem
* Extension Platform
- Improved Extension Platform