javascript获取当前电脑操作系统的文件路径的方式

<script language="javascript" type=text/javascript>
var fso;
fso = new ActiveXObject("Scripting.FileSystemObject");

function SystemSpecialFolder(Special)
{
var tfolder, TemporaryFolder = Special;//0: Windows 操作系统安装的文件;1:包含库、字体，以及设备驱动程序的 System 文件夹;2:存储临时文件的 Temp 文件夹;
tfolder = fso.GetSpecialFolder(TemporaryFolder);
return(tfolder);
}
var Special=0;
document.write(SystemSpecialFolder(Special)+"<br>");

Special=1;
document.write(SystemSpecialFolder(Special)+"<br>");

Special=2;
document.write(SystemSpecialFolder(Special));
</script>