// JavaScript Document
function toggleSub(submenu) {
    if (document.getElementById(submenu).style.display == 'none') {
        document.getElementById(submenu).style.display = 'block'
    } else {
        document.getElementById(submenu).style.display = 'none'
    }
}

function toggleLink(expandable) {
	if (document.getElementById(expandable).a.text == '+') {
		document.getElementById(expandable).a.text = '-'
	} else {
		document.getElementById(expandable).a.text = '+'
	}
}