function mudaconteudo(elementid, content){
	if (document.all){
		el = document.getElementById(elementid);
		el.innerHTML=content;
	}
	else if (document.getElementById){
		rng = document.createRange();
		el = document.getElementById(elementid);
		rng.setStartBefore(el);
		htmlFrag = rng.createContextualFragment(content);
		while (el.hasChildNodes()) el.removeChild(el.lastChild);
		el.appendChild(htmlFrag);
	}
}