function popup(pagina,titulo,ancho,alto,s,r){
window.open(pagina,titulo,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars='+s+',resizable='+r+',width='+ancho+',height='+alto+',left = 25,top = 25');}

function popup2(pagina,titulo,ancho,alto,s,r){
window.open(pagina,titulo,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars='+s+',resizable='+r+',width='+ancho+',height='+alto+',left = 0,top = 0');}

function cerrar(){
	self.close();
}