//-----------------------------------------------------------------------------------------
// ToggleVisibility - Change visibility of an object.
//-----------------------------------------------------------------------------------------
//     tcId - ID of object to show/hide.
//-----------------------------------------------------------------------------------------
function ToggleVisibility(tcId)
{
	var visibility = document.getElementById(tcId).style.visibility;
	if (visibility == 'hidden')
	{
		document.getElementById(tcId).style.height = 'auto';
		document.getElementById(tcId).style.visibility = 'visible';
	}
	else
	{
		document.getElementById(tcId).style.height = '0px';
		document.getElementById(tcId).style.visibility = 'hidden';
	}
} // ToggleVisibility()