function slideBanner(teller){
	
	for(x=0;x<=banner_aantal;x++){
		$("#banner-"+x).css('display','none');
	}
	
	$("#banner-"+teller).css('display','block');
		
	if(banner_aantal == teller){
		next = 0;
	}else{
		var next = teller+1;
	}
	setTimeout("slideBanner("+next+")",5000);
}