function showHideElement(sElement)
{
	oElement = document.getElementById(sElement);
	
	if(oElement.style.display == 'block')
	{
		hideElement(sElement);
	}
	else
	{
		showElement(sElement);
	}
}

function showElement(sElement)
{
	document.getElementById(sElement).style.display = 'block';
}

function hideElement(sElement)
{
	document.getElementById(sElement).style.display = 'none';
}

function treeClick(oObject, sElement)
{
	oElement = document.getElementById(sElement);
	
	if(oElement.style.display == 'block' || oElement.style.display == '')
	{
		hideElement(sElement);
		oObject.className = 'treeplus';
	}
	else
	{
		showElement(sElement);
		oObject.className = 'treemin';
	}
}