卸载IE8恢复到IE6工具

卸载IE8恢复到IE6的工具。有时需要改注册表"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{89820200-ECBD-11cf-8B85-00AA005B4383}"，"IsInstalled"键值由"1"改为"0"，重启后，系统自动回到IE6.0。