function openclose(e){

	if(e.parentNode.tagName == 'LI'){
		var sublevel = e.parentNode.getElementsByTagName('ul')[0];
	}else if(e.tagName == 'LI'){
		var sublevel = e.getElementsByTagName('ul')[0];
	}else{
		return false;
	}
	
	
	if(sublevel.className.search('open') == -1){
		changeClassName(sublevel, 'close', 'open');
		changeClassName(e, 'close', 'open');
	}else{
		changeClassName(sublevel, 'open', 'close');
		changeClassName(e, 'open', 'close');
	}
}

function changeClassName(element, first, last){
	if(element.className.indexOf(first) != -1){
			element.className = element.className.replace(first, last);
	}else{
		element.className += ' '+last+' ';
	}
}