Prueba esto:
<html>
<head>
<script language="JavaScript">
function abre(){
open("/ventana.html","sizewindow","width=400,height=350,s crollbars=yes,toolbar=no");
}
</script>
</head>
<body>
<A onclick="abre('/ventana.html');return false;" href="#" >Enlace</a>
</body>
</html>
Ojala te sirva.
Saludos