function getMouseXY(e) {
   var posX = 0;
   var posY = 0;
   var e = (!e) ? window.event : e;
   if (e.pageX || e.pageY) { posX = e.pageX; posY = e.pageY; }
   else if (e.clientX || e.clientY) {
      if (document.body.scrollLeft || document.body.scrollTop) { posX = e.clientX + document.body.scrollLeft; posY = e.clientY + document.body.scrollTop; }
      else { posX = e.clientX + document.documentElement.scrollLeft; posY = e.clientY + document.documentElement.scrollTop; }
   }
   document.getElementById("finestrasito").style.left = posX; document.getElementById("finestrasito").style.top = posY;
}
document.onmousemove = getMouseXY;
function Apri(Pagina)
{document.getElementById("sitoesterno").src=Pagina;
document.getElementById("sitoesterno").offsetTop;
document.getElementById("finestrasito").style.visibility = "visible";}
function Chiudi()
{document.getElementById("finestrasito").style.visibility = "hidden";
document.getElementById("sitoesterno").src="about:blank";
document.getElementById("sitoesterno").offsetTop;}