function expandingWindow(website) 
      {
        var heightspeed = 9; // vertical scrolling speed (higher = slower)
        var widthspeed = 12;  // horizontal scrolling speed (higher = slower)
        var wih=800;
        var wiw=1024;
        var leftdist = 0;    // distance to left edge of window
        var topdist = 0;     // distance to top edge of window
        if (document.all) 
        {
          var winwidth = window.screen.availWidth - leftdist;
          var winheight = window.screen.availHeight - topdist;
          if (winwidth<wiw)
          {
            wiw=winwidth;
          }
          if (winheight<wih)
          {
            wih=winheight;
          }
          var sizer = window.open("","","left=0" + leftdist + ",top=0" + topdist + ",width=0,height=0,scrollbars=no");
          for (sizeheight = 1; sizeheight < wih; sizeheight += heightspeed) 
          {
            sizer.resizeTo("1", sizeheight);
          }
          for (sizewidth = 1; sizewidth < wiw; sizewidth += widthspeed)
          {
            sizer.resizeTo(sizewidth, sizeheight);
          }
          sizer.location = website;
        }
        else
          window.location = website;
      }
    
      function pop() 
      { //v2.0
        var heightspeed = 9; // vertical scrolling speed (higher = slower)
        var widthspeed = 12;  // horizontal scrolling speed (higher = slower)
        var leftdist = 0;    // distance to left edge of window
        var topdist = 0;     // distance to top edge of window
        var winwidth = window.screen.availWidth - leftdist;
        var winheight = window.screen.availHeight - topdist;
        if (winheight>600)
        {
          expandingWindow('sfondo.html')
        }
        else
          expandingWindow('sfondo.html')
      }