function show(x)
{
  var area = document.getElementById("ambienti");
  var divs = area.getElementsByTagName("div");
  var coll = area.getElementsByTagName("a");

  var goes = divs.length;
  for(i=0; i<goes; i++)
  {
    if(i==x)
	{
	  coll[i].style.color='#000000';
	}
	else
	{
	  coll[i].style.color='#808080';
	}
  } 
}


function sovrapponi()
{
  var top,left;
  if(document.getElementById("primo"))
  {
    x=getPosX(document.getElementById("primo"));
	document.getElementById("secondo").style.left=x;
  }
  if(document.getElementById("primo"))
  {
    y=getPosY(document.getElementById("primo"));
	document.getElementById("secondo").style.top=y;
  }
}