function treeMenu(tName) {
	for (var i = 1; i <= 8; i++){
		m_i=i;
		tNamestr = "treeMenu" + m_i;
		if (tNamestr == tName){
			tDisplay=document.getElementById(tName).style.display;
			if (tDisplay=="none"){
				document.getElementById(tName).style.display="block"
			}else{
				document.getElementById(tName).style.display="none"
			}
		}else{
			document.getElementById(tNamestr).style.display="none"
		}
		m_i=0;
	}
}

function opentree(tName) {
	document.getElementById(tName).style.display="block";
}