function abrir(url){ window.open( url,'','width=550,height=550,toolbar=no,location=no,directories=no,menubar=no,scrollbars=yes,resizable=no') } 
function abrir1(url){ window.open( url,'','width=480,height=300,toolbar=no,location=no,directories=no,menubar=no,scrollbars=no,resizable=no') } 
function abrir2(url){ window.open( url,'','width=550,height=400,toolbar=no,location=no,directories=no,menubar=no,scrollbars=no,resizable=no') } 
function abrir4(url){ window.open( url,'','width=537,height=220,toolbar=no,location=no,directories=no,menubar=no,scrollbars=no,resizable=no') }