var bannerCrt = 0;
function change_bannere( nr )
{
	var node = document.getElementById( 'containerBannere' );
    if ( node == null ) { return; }
    
	bannerCrt = nr;
	var crtBID = 'B' + nr;
	if ( !document.getElementById( crtBID ) )
	{
		bannerCrt = 1;
		crtBID = 'B1';
	}
	
    for ( var child = node.firstChild; child; child = child.nextSibling )
	{	
		// div
		if ( /bn/i.test(child.className) )
		{
			child.style.display = ( child.id == crtBID ) ? 'block' : 'none';
		}
		
		// bilutza
		var nrID = child.id.replace( 'B', '');
		var imgID = 'img_b_' + nrID;
		var sufix = ( child.id == crtBID ) ? 'on' : 'off';
		var elemIMG = document.getElementById( imgID );
		if ( elemIMG ) 
		{
			elemIMG.className = 'bilutza_' + sufix;
		}
	}	
}

function action_bannere()
{
	change_bannere( bannerCrt + 1 );
	setTimeout( 'action_bannere()', 4000 );
}