function subscribe(slug, on){
	var action = 'subscribe';
	
	if (on != '1' && on != '0'){
	    on = '1';
	}
	
	if (on == '0'){
		action = 'unsubscribe';
	}
	
	$('subscribeLoading').show();
	$('subscribeContent').hide();	
	new Ajax.Request("/" + action + "/" + slug, {
		asynchronous:true, 
		evalScripts:false,
		onComplete:function(request){		    
			document.getElementById('itemSubscribe').innerHTML = request.responseText;
		}
	});
}