// =======================================================
var idMrgV = charIDToTypeID( "MrgV" );
    var desc14 = new ActionDescriptor();
    var idDplc = charIDToTypeID( "Dplc" );
    desc14.putBoolean( idDplc, true );
executeAction( idMrgV, desc14, DialogModes.NO );

// =======================================================
var idslct = charIDToTypeID( "slct" );
    var desc17 = new ActionDescriptor();
    var idnull = charIDToTypeID( "null" );
        var ref2 = new ActionReference();
        var idLyr = charIDToTypeID( "Lyr " );
        var idOrdn = charIDToTypeID( "Ordn" );
        var idBack = charIDToTypeID( "Back" );
        ref2.putEnumerated( idLyr, idOrdn, idBack );
    desc17.putReference( idnull, ref2 );
    var idMkVs = charIDToTypeID( "MkVs" );
    desc17.putBoolean( idMkVs, false );
executeAction( idslct, desc17, DialogModes.NO );

// =======================================================
var idslct = charIDToTypeID( "slct" );
    var desc18 = new ActionDescriptor();
    var idnull = charIDToTypeID( "null" );
        var ref3 = new ActionReference();
        var idLyr = charIDToTypeID( "Lyr " );
        var idOrdn = charIDToTypeID( "Ordn" );
        var idFrnt = charIDToTypeID( "Frnt" );
        ref3.putEnumerated( idLyr, idOrdn, idFrnt );
    desc18.putReference( idnull, ref3 );
    var idMkVs = charIDToTypeID( "MkVs" );
    desc18.putBoolean( idMkVs, false );
executeAction( idslct, desc18, DialogModes.NO );