function mailnobot(nm,dm)
{
   mailurl = "mailto:" + nm + "@" + dm;
   window.location = mailurl;
}
function encender_boton(boton){
	document.images[boton].src="imgs/botonON.gif";
}
function apagar_boton(boton){
	document.images[boton].src="imgs/botonOFF.gif";
}