// layer display functions


function showHide(panelID)
 {
  var panel = document.getElementById(panelID);
  if (panel != null)
	{
	if (panel.style.visibility == "hidden")
	  {
		panel.style.display = "block";
		panel.style.visibility = "visible";
	  } else {
		panel.style.display = "none";
		panel.style.visibility = "hidden";					
	}
 }
}

function showLayer(layerId)
 {
  var panel = document.getElementById(layerId);
  if (panel != null)
	{
    panel.style.Top = ((event.clientY  + document.body.scrollTop) + 100);
	panel.style.left = ((event.clientX + document.body.scrollLeft) + 10);
	
	panel.style.display = "inline";
	panel.style.visibility = "visible";
    }
}

function hideLayer(layerId)
 {
  var panel = document.getElementById(layerId);
  if (panel != null)
	{
	panel.style.display = "none";
	panel.style.visibility = "hidden";
    }
}

// JavaScript Document