function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}
function loadNavigation(wrap,toggle) {
	var buttons = getElementsByClass(toggle, $(wrap));
	for(i=0; i<buttons.length; i++) {
		buttons[i].onclick = function () {
			if(this.parentNode.className=='opened') {
				this.parentNode.className='';
			}else{
				this.parentNode.className='opened';
			}
		}
	}
}

window.onload = function() {
	loadNavigation("sidebarDegrees","switch");
}