function DoAutorotationStart() {
document.ptviewer.startAutoPan( 0.5, 0.0, 1.0 );
}
function DoAutorotationStop() {
document.ptviewer.stopAutoPan();
}
function DoZoomIn() {
document.ptviewer.startAutoPan( 0.0, 0.0, 1.0/1.03 );
}
function DoZoomOut() {
document.ptviewer.startAutoPan( 0.0, 0.0, 1.03 );
}

function NewPano(  ) {
document.ptviewer.newPanoFromList(0);
}