function expOver(evt, layer, xdec, ydec, fond, bord, prem, add, cat)
{
  var xcoord, ycoord;
  var l = null;

  if (document.all)
    {
      l = document.all [layer];
    }
  else
    {
      l = document.getElementById (layer);
    }

  xcoord = evt.clientX;
  ycoord = evt.clientY;

  
  if(document.documentElement &&
     (document.documentElement.scrollTop || document.documentElement.scrollLeft))
    {
      xcoord += document.documentElement.scrollLeft;
      ycoord += document.documentElement.scrollTop;
    }
  else if (document.body &&
	   (document.body.scrollTop || document.body.scrollLeft)) 
    {
      xcoord += document.body.scrollLeft;
      ycoord += document.body.scrollTop;
    }

  if (typeof (l.style.left) == 'string')
    {
      l.style.left = xcoord + xdec + 'px';
      l.style.top = ycoord + ydec + 'px';
    }
  else
    {
      l.style.left = xcoord + xdec;
      l.style.top = ycoord + ydec;
    }

  l.style.visibility = "visible";
  l.innerHTML = '<table cellpadding="2" cellspacing="0" style="background-color: ' + fond + '; border: thin solid ' + bord + ';"><tr><td bgcolor="#900000"><font color="#FFFFFF" size="1"><strong>' + prem + '</strong></font></td></tr><tr><td></td></tr><tr><td><font color="#011C4C" size="2"><strong>' + add + '</strong></font></td></tr><tr><td><font color="#011C4C" size="2"><strong>' + cat + '</strong></font></td></tr></table>';

}

function expOut(layer)
{
  var l = null;

  if (document.all)
    {
      l = document.all [layer];
    }
  else
    {
      l = document.getElementById (layer);
    }

  l.style.visibility="hidden";
}

function expMove(evt, layer, xdec, ydec)
{
  var xcoord, ycoord;
  var l = null;

  if (document.all)
    {
      l = document.all [layer];
    }
  else
    {
      l = document.getElementById (layer);
    }

  xcoord = evt.clientX;
  ycoord = evt.clientY;

  
  if(document.documentElement &&
     (document.documentElement.scrollTop || document.documentElement.scrollLeft))
    {
      xcoord += document.documentElement.scrollLeft;
      ycoord += document.documentElement.scrollTop;
    }
  else if (document.body &&
	   (document.body.scrollTop || document.body.scrollLeft)) 
    {
      xcoord += document.body.scrollLeft;
      ycoord += document.body.scrollTop;
    }
  
  if (typeof (l.style.left) == 'string')
    {
      l.style.left = xcoord + xdec + 'px';
      l.style.top = ycoord + ydec + 'px';
    }
  else
    {
      l.style.left = xcoord + xdec;
      l.style.top = ycoord + ydec;
    }

}