function OpenMenu(n, valore)
{
 shift=valore;
 if (navigator.appName=='Microsoft Internet Explorer')
  shift=valore;

 document.getElementById('ds'+n).style.display='block';
 if (screen.width==1024) {
 document.getElementById('ds'+n).style.left=460+(n-1)*shift+'px';
 }
 if (screen.width==800) {
 document.getElementById('ds'+n).style.left=350+(n-1)*shift+'px';
 }
 document.getElementById('d'+n).style.backgroundColor='#A3C2E1';
}

function CloseMenu(n)
{
 document.getElementById('ds'+n).style.display='none';
 document.getElementById('d'+n).style.backgroundColor='#A3C2E1';
}