function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}


function setCookies() {
    var exdate=new Date();
    exdate.setDate(exdate.getDate() + 2);
    document.cookie = "voted=1;expires="+exdate.toGMTString()+";path=/";				
}

function setDepth() {
    var exdate=new Date();
    exdate.setDate(exdate.getDate() + 2);
    var depth = readCookie('depth');
    document.cookie = "depth=" + (depth == null ? 1 : parseInt(depth) + 1) + ";expires="+exdate.toGMTString()+";path=/";	  
}