#target photoshop
if (documents.length == 0) {
    alert("nothing opened");
} else {
    // start

    //setup
    var file = app.activeDocument;
    var selec =  file.selection; 

    //run
    var bnds = selec.bounds; // get the bounds of current selection
    var // save the particular pixel values
       xLeft = bnds[0],
       yTop = bnds[1],
       xRight = bnds[2],
       yBottom = bnds[3];

    var newRect = [ [xLeft-95,yTop -300], [xLeft-95,yTop+550], [xLeft + 1400,yTop + 550], [xLeft + 1400,yTop - 300] ]; // set coords for selection, counter-clockwise

    selec.deselect;
    selec.select(newRect);

    // end
}