// general functions
function showMore(name, link, textOn, textOff)
{
	if (document.all[name].style.display == "none")
	{
		document.all[name].style.display="block";
		document.all[link].innerText = textOff;
	} else
	{
		document.all[name].style.display="none";
		document.all[link].innerText = textOn;
	}
}


function showMorePic(name, pic, session, picOn, picOff)
{
	if (document.all[name].style.display == "none")
	{
		document.all[name].style.display="block";
		document.all[pic].src = picOff;
		if (session) document.all[session].value = "on";
	} else
	{
		document.all[name].style.display="none";
		document.all[pic].src = picOn;
		if (session) document.all[session].value = "off";
	}
}

function showOrHide(name, state)
{
	if (state)
		document.all[name].style.display=state
	else
		if (document.all[name].style.display == "none")
		{
			document.all[name].style.display="block";
		} else
		{
			document.all[name].style.display="none";
		}
}


function show(layerid) 
{ 
	document.getElementById(layerid).style.visibility = 'visible'; 
} 
function hide(layerid) 
{ 
	document.getElementById(layerid).style.visibility = 'hidden'; 
}