var fw=640;
var fh=480;
var hb=screen.width-fw-20;
var vb=screen.height-fh-15;

var t=10;
var radius=0;

function apri(foto)
   {
   radius=Math.PI/20;
   hpos=parseInt(hb*Math.cos(radius));
   vpos=parseInt(vb*Math.sin(radius));
   f=window.open("./foto_camere.asp?var1="+foto,"f","width="+fw+",height="+fh+",status=no,menubar=no,resizable=no,scrollbars=no,left="+hpos+",top="+vpos);
   f.focus();
   Arco();
   }

function Arco()
   {
   radius=Math.PI/20;
   radius-=Math.PI/20;
   hpos=parseInt(hb*Math.cos(radius));
   vpos=parseInt(vb*Math.sin(radius));
   f.moveTo(hpos,vpos);
   radius>0?tm=setTimeout("Arco()",t):null;
   }