function toggle1() {
	if (document.getElementById('menuHome').style.display=='block') {
		document.getElementById('menuHome').style.display='none';
	}
	else { document.getElementById('menuHome').style.display='block'; }
}
function toggle2() {
	if (document.getElementById('menuGalleries').style.display=='block') {
		document.getElementById('menuGalleries').style.display='none';
	}
	else { document.getElementById('menuGalleries').style.display='block'; }
}
	
function toggle3() {
	if (document.getElementById('menuEbooks').style.display=='block') {
		document.getElementById('menuEbooks').style.display='none';
	}
	else { document.getElementById('menuEbooks').style.display='block'; }
}

function toggle4() {
	if (document.getElementById('menuRing').style.display=='block') {
		document.getElementById('menuRing').style.display='none';
	}
	else { document.getElementById('menuRing').style.display='block'; }
}

function toggle5() {
	if (document.getElementById('menuWHMB').style.display=='block') {
		document.getElementById('menuWHMB').style.display='none';
	}
	else { document.getElementById('menuWHMB').style.display='block'; }
}

function toggle6() {
	if (document.getElementById('menuNAWCC').style.display=='block') {
		document.getElementById('menuNAWCC').style.display='none';
	}
	else { document.getElementById('menuNAWCC').style.display='block'; }
}

function toggle7() {
	if (document.getElementById('menuNAWCC_CH_149').style.display=='block') {
		document.getElementById('menuNAWCC_CH_149').style.display='none';
	}
	else { document.getElementById('menuNAWCC_CH_149').style.display='block'; }
}

function toggle8() {
	if (document.getElementById('menuOther').style.display=='block') {
		document.getElementById('menuOther').style.display='none';
	}
	else { document.getElementById('menuOther').style.display='block'; }
}

function openall() {
        document.getElementById('menuHome').style.display='block';
        document.getElementById('menuGalleries').style.display='block';
        document.getElementById('menuEbooks').style.display='block';
        document.getElementById('menuRing').style.display='block';
        document.getElementById('menuWHMB').style.display='block';
        document.getElementById('menuNAWCC').style.display='block';
        document.getElementById('menuNAWCC_CH_149').style.display='block';
        document.getElementById('menuOther').style.display='block';
}
	
function clearall() {
	document.getElementById('menuHome').style.display="none";
	document.getElementById('menuGalleries').style.display="none";
	document.getElementById('menuEbooks').style.display="none";
	document.getElementById('menuRing').style.display="none";
	document.getElementById('menuWHMB').style.display="none";
	document.getElementById('menuNAWCC').style.display="none";
	document.getElementById('menuNAWCC_CH_149').style.display="none";
	document.getElementById('menuOther').style.display="none";
}

var openbutton = "<h1><a href=\"javascript:openall();\">(open all)</a></h1>"
var closebutton = "<h1><a href=\"javascript:clearall();\">(close all)</a></h1>"
var instructions = "<div id=\"instructions\">Click on categories to reveal and hide links.</div>"