function secondarynavigation(){
	
	//collapse/expand menus
	var sections = new Array("lorum","gallery","about","sales","links","comments" ,"contact" ,"All" ,"Wildlife" ,"Macrography" ,"Landscapes" ,"People" ,"Monochrome");
	
	
	//highlight relevant links
	if(window.secondary_nav && document.getElementById("secondary-nav-" + secondary_nav)){
	document.getElementById("secondary-nav-" + secondary_nav).className = "onsecondary";

	}

}