// DO NOT MESS WITH THESE FUNCTIONS  
	// they have to be loaded at the top of the page
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 DoShowHideHotspots() {
	document.ptviewer.toggleHS();
}
function DoReset() {
	document.ptviewer.gotoView( -45, -60, 80 );
}
function DisplayPan() {
	status = document.ptviewer.pan().toString() ;
}
function DisplayTilt() {
	status = document.ptviewer.tilt().toString() ;
}
function DisplayFov() {
	status = document.ptviewer.fov().toString() ;
}