function open_win(which_win) 
{
	switch(which_win) {
		case "1": window.open("pano-rondrit1.htm" ,"_blank","toolbar=no, location=yes, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, height=800, top=50");
		default: window.open("not-found.htm" ,"_blank","toolbar=no, location=yes, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, height=100, top=50");
	}	
}