function showLAYER(idName) {
	if (document.getElementById) {
		if (document.getElementById(idName).style.visibility == 'hidden') {
			document.getElementById(idName).style.visibility = "visible" ;
		}
		else {
			document.getElementById(idName).style.visibility = "hidden" ;
		}
	}
	else if (document.all) {
		if (document.all(idName).style.visibility == 'hidden') {
			document.all(idName).style.visibility = "visible" ;
		}
		else {
			document.all(idName).style.visibility = "hidden" ;
		}
	}
}

function hideLAYER(idName) {
	if (document.getElementById) {
		document.getElementById(idName).style.visibility = "hidden" ;
	}
	else if (document.all) {
		document.all(idName).style.visibility = "hidden" ;
	}
}

function foldLAYER(idName) {
	if (document.getElementById) {
		if (document.getElementById(idName).style.display == "none") {
			document.getElementById(idName).style.display = "block" ;
		}
		else {
			document.getElementById(idName).style.display = "none" ;
		}
	}
}