var bannerToPlay = getCookie("bannerToPlay");

if(bannerToPlay == "")
{
	var randomnumber=Math.floor(Math.random()*10)%2;
	
	switch(randomnumber)
	{
		case 0:
			bannerToPlay = "beach";
			break;
		case 1: 
			bannerToPlay = "night";
			break;
		default:
			bannerToPlay = "beach";
			break;
	}
}

if(bannerToPlay == "beach")
	setCookie("bannerToPlay", "night", 30);
else
	setCookie("bannerToPlay", "beach", 30);

function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
	{
		c_start=document.cookie.indexOf(c_name + "=");
		if (c_start!=-1)
		{
			c_start=c_start + c_name.length+1;
			c_end=document.cookie.indexOf(";",c_start);
			if (c_end==-1) c_end=document.cookie.length;
			return unescape(document.cookie.substring(c_start,c_end));
		}
	}
	return "";
}