function setCookie(par1) {
	// Cookie zusammenbauen und setzen (expires = 1 Jahr)
	var today = new Date();
	today.setTime(today.getTime());
	var expires = 1000 * 60 * 60 * 24 * 365; 
	var expires_date = new Date(today.getTime() + expires);
	document.cookie = 'open=' + par1 + '; path=/; expires=' + expires_date.toGMTString();
	return false;
}

$(document).ready(function(){
	$("#arrow").click(function(){ 
		$("#arrow").fadeOut(500);
		if($('#banner').attr('class') == 'banner-b') {
			hideHeader();
		 }
		 else {
			showHeader();
		 }
		 return false;
	});	
});

function hideHeader() {
	if ($('#banner').attr('class') == 'banner-b') {
		$("#banner").animate({
			height: "0px"
		}, 1500, function(){
			$('#arrow').attr('class', 'large');
			$("#arrow").fadeIn(500);
			$('#banner').attr('class', 'banner-s');
			return false;
		});
		
		setCookie('true');
	}
}
function showHeader() {
	if ($('#banner').attr('class') == 'banner-s') {
		$("#banner").animate({
			height: "340px"
		}, 1500, function(){
			$('#arrow').attr('class', 'small');
			$("#arrow").fadeIn(500);
			return false;
		});
		$('#banner').attr('class', 'banner-b');
		setCookie('false'); 
	}
}