How to find the running environment of X-pages

Here I am going to tell that current X-page is running Whether in notes or client. Using that information we can visible or disable a control depend upon running environment.

Her i give a simple example that if running environment is notes means that label shows "Notes " else it shows "WEB"

xp:label id="label1"

[CDATA[#{javascript:

if( context.isRunningContext('Notes') ){

return "Notes ";

}

return "WEB ";

}]]> /xp:this.value

/xp:label