function SoloNumeros(myfield, e, dec) { var key; var keychar; if (window.event) key = window.event.keyCode; else if (e) key = e.which; else return true; keychar = String.fromCharCode(key); if ((key == null) || (key == 0) || (key == 8) || (key == 9) || (key == 13) || (key == 27)) return true; else if ((("0123456789").indexOf(keychar) > -1)) return true; else if (dec && (keychar == ".")) { myfield.form.elements[dec].focus(); return false; } else return false; }