var bannerCrt = 0;
function change_bannere( nr )
{
	var node = document.getElementById( 'containerBannere' );
    if ( node == null ) { return; }
    
	bannerCrt = parseInt( nr );
	var crtBID = 'B' + nr;	
	if ( !document.getElementById( crtBID ) )
	{
		bannerCrt = 1;
		crtBID = 'B1';
	}
	
    for ( var child = node.firstChild; child; child = child.nextSibling )
	{	
		// div
		if ( /banner/i.test(child.className) )
		{
			child.style.display = ( child.id == crtBID ) ? 'block' : 'none';
		}
	}	
	
	for ( var child = node.firstChild; child; child = child.nextSibling )
	{	
		// bilutza:
		var nrID = parseInt( child.id.replace( 'B', '') );
		var bilutzaPre = document.getElementById( 'bpre_' + nrID );
		var bilutza = document.getElementById( 'b_' + nrID );
		var bilutzaAft = document.getElementById( 'baft_' + nrID );			
		
		//alert( 'nrID: ' + nrID + ' - ' + 'bannerCrt: ' + bannerCrt );
		
		// pre:
		if ( bilutzaPre )
		{			
			if ( nrID == 1 )
			{
				bilutzaPre.className = ( nrID == bannerCrt ) ? 'banner_menu_left_blue' : 'banner_menu_left_grey';
			}
			else 
			{
				if ( nrID == bannerCrt )
				{
					bilutzaPre.className = 'banner_menu_grey_blue';
				}
				else 
				{
					bilutzaPre.className = ( ( nrID - 1 ) == bannerCrt ) ? 'banner_menu_blue_grey' : 'banner_menu_grey_grey';
				}
			}
		}
		
		// middle:
		if ( bilutza ) 
		{
			bilutza.className = ( nrID == bannerCrt ) ? 'banner_menu_bg_blue' : 'banner_menu_bg_grey';
		}
		
		// after:
		if ( bilutzaAft )
		{
			bilutzaAft.className = ( nrID == bannerCrt ) ? 'banner_menu_blue_right' : 'banner_menu_grey_right';
		}
	}
}

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