var objMenu;
var strMenu = "#nav-secondary > ul";
var strHide = "hide";
var strCollapsible = "collapsible";
var strSelected = "selected";

$(function() {

    objMenu = $(strMenu);
    
	if (objMenu != null){
	
	    objMenu.addClass(strCollapsible);
	    
        objMenu.children("li").each(function(i){
            $(this).children("a").each(function(i){
				$(this).click(function(){
					changeSection(this);
					return false;
				});
            });
        });
        
	}
		
});

function changeSection(obj){
    obj = $(obj).parent("li");
	hideAllSections(0);
	showMenu(obj);
}

function showMenu(obj) {
    if (!$(obj).hasClass(strSelected)) {
        $(obj).addClass(strSelected);
    }
}

function hideAllSections(int) {
	objMenu.children("li").each(function(i){
		$(this).removeAttr("class");
	});
}