var fadeOpacity  = new Array();
      var fadeTimer    = new Array();
      var fadeInterval = 100;  // milliseconds

      function fade(o,d,nome_ancora)
      {
        // o - Object to fade in or out.
        // d - Display, true =  fade in, false = fade out
        // x - posizione asse x
        // y - posizione asse y
      
        var obj = document.getElementById(o);
        x=getPosX(document.getElementById(nome_ancora));
        y=getPosY(document.getElementById(nome_ancora));

      	obj.style.top=y;
      	obj.style.left=x;
        if((fadeTimer[o])||(d&&obj.style.display!='block')||(!d&&obj.style.display=='block'))
        {
      
          if(fadeTimer[o])
            clearInterval(fadeTimer[o]);
          else
            if(d) fadeOpacity[o] = 0;
            else  fadeOpacity[o] = 9;
        
          obj.style.opacity = "."+fadeOpacity[o].toString();
          obj.style.filter  = "alpha(opacity="+fadeOpacity[o].toString()+"0)";
          
          if(d)
          {
            obj.style.display = 'block';
            fadeTimer[o] = setInterval('fadeAnimation("'+o+'",1);',fadeInterval);
          }
          else
            fadeTimer[o] = setInterval('fadeAnimation("'+o+'",-1);',fadeInterval);
        }
      }

      function fadeAnimation(o,i)
      {

        // o - o - Object to fade in or out.
        // i - increment, 1 = Fade In

        var obj = document.getElementById(o);
        fadeOpacity[o] += i;
        obj.style.opacity = "."+fadeOpacity[o].toString();
        obj.style.filter  = "alpha(opacity="+fadeOpacity[o].toString()+"0)";

        if((fadeOpacity[o]=='9')|(fadeOpacity[o]=='0'))
        {
          if(fadeOpacity[o]=='0')
            obj.style.display = 'none';
          else
          {
            obj.style.opacity = "1";
            obj.style.filter  = "alpha(opacity=100)";
          }
      
          clearInterval(fadeTimer[o]);
          delete(fadeTimer[o]);
          delete(fadeTimer[o]);
          delete(fadeOpacity[o]);
      
        }  
      }
      
function getPosX(obj) {
var curleft = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curleft += obj.offsetLeft
obj = obj.offsetParent;
}
}
else if (obj.x)
curleft += obj.x;
//alert(curleft);
return curleft;
}

function getPosY(obj) {
var curtop = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curtop += obj.offsetTop
obj = obj.offsetParent;
}
}
else if (obj.y)
curtop += obj.y;
//alert(curtop);
return curtop;
}