var myid = "";
var myclass = "";
var mitiempo = 1000;
function cambiaa(myx, myy, myz)
{
	myid = myx;
	myclass = myy;
	mitiempo = myz;
	if(myclass == "no"){
		cambiab();
	}
	else if(myclass == "si"){
		setTimeout("cambiab()", mitiempo);
	}
}

function cambiab()
{
document.getElementById(myid).className = myclass;

//mio=document.getElementById(id);
//mio.className=newClass;
//document.getElementById(myid2).className = 'si';
//document["notisia"].display="block";
}