// JavaScript Document
function expandcollapse (postid){
	whichpost = document.getElementById(postid);
	if (whichpost.className=="postshown") {
		whichpost.className="posthidden";
		document.getElementById('simbolo').innerHTML = "[+]";
	} else {
		whichpost.className="postshown";
		document.getElementById('simbolo').innerHTML = "[ - ]";
	}
}