@_win32 true if running on a Win32 system.
@_win16 true if running on a Win16 system.
@_mac true if running on a Apple Macintosh system.
@_alpha true if running on a DEC Alpha processor.
@_x86 true if running on an Intel processor.
@_mc680x0 true if running on a Motorola 680x0 processor.
@_PowerPC true if running on a Motorola PowerPC processor.
@_jscript Always true.
@_jscript_build Contains the build number of the JScript scripting engine.
@_jscript_version Contains the JScript version number in major.minor format.
Microsoft Internet Explorer 3.0 JScript Version 1.0
Microsoft Internet Explorer 4.0 JScript Version 3.0
Microsoft Internet Explorer 5.0 JScript Version 5.0
alert(@if (@_win32) "using Windows NT or Windows 95" @else "using Windows 3.1" @end)
@if (@_jscript_version == 4)alert("JScript version 4");
Vieleicht kommst Du damit weiter
Bernd