window.addEvent('domready', function() {
	nav_items = $('publisher_navigation')?$('publisher_navigation').getElementsByTagName('li'):[];
	for(i=0; i<nav_items.length; i++) {
		publisher_logos[i] = nav_items[i].id.replace('publisher_navigation_','');
		$('publisher_logo_'+publisher_logos[i]).style.display = 'none';
		
		a = $('publisher_navigation_'+publisher_logos[i]).getFirst();
		a.order = i;
		a.addEvent('click', function() {
			return showPublisherLogo(this.order);
		});
	}
	showPublisherLogo(0);
	if($('publisher_navigation_prev')){
		$('publisher_navigation_prev').addEvent('click', function() { prevPublisherLogo(); return false; });
	}
	if($('publisher_navigation_next')){
		$('publisher_navigation_next').addEvent('click', function() { nextPublisherLogo(); return false; });
	}
} );

publisher_logos = new Array();
var current_publisher = null;

function nextPublisherLogo() {
	if(current_publisher<publisher_logos.length-1) {
		showPublisherLogo(current_publisher+1);
	}
}

function prevPublisherLogo() {
	if(current_publisher>0) {
		showPublisherLogo(current_publisher-1);
	}
}

function showPublisherLogo(id) {
	if(current_publisher != null) {
		$('publisher_logo_'+publisher_logos[current_publisher]).style.display = 'none';
		$('publisher_navigation_'+publisher_logos[current_publisher]).removeClass('active');
	}
	current_publisher = id;
	if($('publisher_logo_'+publisher_logos[current_publisher])){
		$('publisher_logo_'+publisher_logos[current_publisher]).style.display = 'block';
	}
	if($('publisher_navigation_'+publisher_logos[current_publisher])){
		$('publisher_navigation_'+publisher_logos[current_publisher]).addClass('active');
	}
	return false;	
}