function toggle_item(current_item){

    var li = current_item.parentNode.parentNode;
    var ul = li.parentNode;
    var ul_childNodes = ul.childNodes;
    var li_class_before_reset = li.className;
    
    for(var i=0; i<ul_childNodes.length;i++){
        var child_li = ul_childNodes[i];
        /*if(child_li.nodeType !==3 ){  
            child_li.className =  'colapsada';   
        }*/
    }
    
    li.className = (li_class_before_reset !== 'selected'  ? 'selected' : 'colapsada') ; 
    return false;
	
}