<!--
function toggleLayer(visible)
{
if (document.getElementById)
{
var visible = document.getElementById(visible).style;
visible.visibility = visible.visibility? "":"visible";
}
}
 
function toggleBlock(block)
{
if (document.getElementById)
{
var block = document.getElementById(block).style;
block.display = block.display? "":"block";
}
}
 
 
 

function toggleOn(block)
{
if (document.getElementById)
{
var block = document.getElementById(block).style;
block.display ="block";
}
}
 
function toggleOff(none)
{
if (document.getElementById)
{
var none = document.getElementById(none).style;
none.display = "none";
}
}
// -->