function capturaobj(id)
	{return(document.getElementById(id));}
function ocultarymostrardiv(idocultar,idmostrar)
	{
	capturaobj(idocultar).style.display="none";
	capturaobj(idmostrar).style.display="block";
	}
function abrirpop(a,b,c)
{window.open (a,b,c);}