function popup(pagina,w,h,t) {
  if (!w) w=400
  if (!h) h=300
  if (t) { var toolbar = 'toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,screenX=5,screenY=5,copyhistory=yes,width='+w+',height='+h }
  else { var toolbar = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,screenX=5,screenY=5,copyhistory=no,width='+w+',height='+h }
  if (t=="video") { var toolbar = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,screenX=5,screenY=5,copyhistory=no,width='+w+',height='+h }
	var remote = null; var myurl=pagina
	var npag=myurl.substring(0,myurl.indexOf(".")); var npag=npag.substring(npag.lastIndexOf("/")+1,npag.length)
	npag = window.open(myurl,npag,toolbar)
	npag.focus();
}

function go_to_page(page) {
  window.location = page;	
}