function activateMenuTree(lastElement){
	var activePath = lastElement.split('_');
	
	var prefix = '';
	
	for ( i in activePath){
	
		if (prefix != ''){
			prefix += '_' + activePath[i];
		} else {		
			prefix += activePath[i];
			continue;
		}
		
		element = document.getElementById(prefix);
	
		if (element){
			element.style.display = 'block';
		}
	}
}