How to open composition in viewer in Adobe After Effects using scripts

// Make a composition
var comp = app.project.items.addComp('MyComp', 1920, 1080, 1.0, 10, 25.0 );

// Open it in viewer
comp.openInViewer();

This solution works only in AAE CS 6.0

My version of some cross-platform code

function OpenInViewer( comp )
{
    var version = app.version.match(/(\d+\.\d+).*/)[1];

    if( version >= 11.0 )
        comp.openInViewer() ;
    else
    {
        var duration = comp.workAreaDuration;
        comp.workAreaDuration = 2*comp.frameDuration;
        comp.ramPreviewTest("",1,"");
        comp.workAreaDuration = duration;
    }

}

inspired by http://www.videocopilot.net/forum/viewtopic.php?f=5&t=116057#p348646