showHelp 方法就两个参数,没有包括定义窗口大小和标题栏的参数window.showHelp(sURL [, vContextID])ParameterssURL Required. String that specifies the URL of the file to be displayed as help. vContextID Optional. Variant that specifies a string or integer that indicates a context identifier in a Help file.
vContextID Optional. Variant that specifies a string or integer that indicates a context identifier in a Help file.