Add visual style to controls in this DLL
Fix a bug regarding setting http headers in a web page with iframe
The BHO and TaskRepeator can work well with each other (inter-process communication is OK)
Implement closeTaskBrowser API to close TaskBrowser.exe when needed
Only LE_SCRIPT_FILE is required variable
Use lua51.dll instead of lua5.1.dll because some other app use it. Set package.path and package.cpath when lua_State is created
Execute javascript window.opener.close() will cause a confirm dialog shown, so Add closeOpener API to close the IHTMLWindow2's opener.