Plain Code

$('#navigation a').click(function(){
  $('#navigation a').removeClass('selected');
  $(this).toggleClass('selected');
});

$('#nav li').click(function(){
    $(this).addClass('active')
        .siblings().removeClass('active');
});

$(function(){
    
    $(”#menu”).find(“a”).each(function(){
        
    if( location.href.indexOf(this.href) != -1) {
            
        $(this).addClass(“here”);
        }
    
    });

});

$(function(){
   var path = location.pathname.substring(1);
   if ( path )
     $('#sidebar_content a[@href$="' + path + '"]').attr('class', 'selected');
 });