var items = null;

function changeclass(onclick) {
	
	if(items != null || onclick == items){
		items.className = "item"; 
	}
	if(onclick != items){
		items = onclick;
		items.className = "item active"; 
	}
	else{
		items = null;
	}
}

// twitter functie
!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");