function abre_copyright(_param){
  newHRF=_param
  wNueva = open('http://www.bcn.es/catala/aviscopyright.htm','wNou','resizable=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=auto,width=780,height=355,left=5,top=80')
}