function expandcollapse(postid) {
		whichpost = document.getElementById(postid); 
		if (whichpost.className=="unfolded") { 
			whichpost.className="folded";
			setCookie(postid, "folded", 3000);
			whichpost.parentNode.className="passive";
			} 
		else { 
		whichpost.className="unfolded";
		setCookie(postid, "unfolded", 3000);
		whichpost.parentNode.className="active";
		}
	}

function setCookie(c_name,value,expiredays)
	{
	var exdate=new Date()
	exdate.setDate(exdate.getDate()+expiredays)
	document.cookie=c_name+ "=" + escape(value)+ ";path=/;" 
	}
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) {
			alert(c.substring(nameEQ.length,c.length));
			return c.substring(nameEQ.length,c.length);
		}
	}
	return null;
}