function ChecaDominio(w,h) {
		var marginleft = (screen.width - w) / 2;
		var margintop = (screen.height - h) / 2;
		var propriedades = 'height=' + h + ',width=' + w + ',top=' + margintop + ',left=' + marginleft + ',scrollbars=1,resizable=0,menubar=0,toolbar=0,statusbar=0';
		var dominio = document.getElementById('Dominio').value;
		window.open ("sistemas/whois/checkdomain.php?domain=" +dominio, "win_checadominio", propriedades);
		
		
	}