function BT_openPhotoWindow(orientation){
//this function opens up a window 
	if (orientation == 'v') //photo is vertical
		{
//		var photoWidth = (350 / 2)
//		var leftPos = (screen.width / 2) - photoWidth
		var newWindow=window.open("","VerticalPhoto","width=375,height=485,top=0,left=0,menubar");
		newWindow.focus();
		return;
		}
	else 
		{
//		var photoWidth = (500 / 2)
//		var leftPos = (screen.width / 2) - photoWidth
		var newWindow=window.open("","HorizontalPhoto","width=520,height=390,top=0,left=0,menubar");
		newWindow.focus();
		return;
		}
	
}