function expandcollapse (postid) {
	whichpost = document.getElementById(postid);
	if (whichpost.className=="postshown") {
	whichpost.className="posthidden";
	}
	else {
	whichpost.className="postshown";
	}
}

function expandirCentro (postid,postid2,postid3,postid4,postid5) {
	whichpost = document.getElementById(postid);
	if (whichpost.className=="mostrarContenido") {
	whichpost.className="esconderContenido";
	}
	else {
		whichpost2 = document.getElementById(postid2);
		whichpost3 = document.getElementById(postid3);
		whichpost4 = document.getElementById(postid4);
		whichpost5 = document.getElementById(postid5);
		whichpost.className="mostrarContenido";
		whichpost2.className="esconderContenido";
		whichpost3.className="esconderContenido";
		whichpost4.className="esconderContenido";
		whichpost5.className="esconderContenido";
	}
}