var tooltip;

function showToolTip(event, text)
{
  if (text != '')
  {
    text = text.replace(/("|')/g, '\\$1');
    tooltip = setTimeout("showToolTip_("+event.clientX+","+event.clientY+",'"+text+"')", 700);
  }
}

function showToolTip_(x,y,text)
{
  var t = document.getElementById('tooltip');
  t.innerHTML = '<pre>'+text+'</pre>';
  t.style.left = x+10+'px';
  t.style.top = y+document.body.scrollTop-20+'px';
  t.style.visibility = 'visible';
}

function hideToolTip()
{
  var t = document.getElementById('tooltip');
  t.style.visibility = 'hidden';
  clearTimeout(tooltip);
}

function showHelp(layer)
{
  document.getElementById(layer).style.visibility='visible';
}

function hideHelp(layer)
{
  document.getElementById(layer).style.visibility='hidden';
}