function num_filter(e/*event*/, o /* object*/) {
var o = $(o);
var v = o.val();
var keyCode = ('which' in e) ? e.which : e.keyCode;
if ($.inArray(keyCode, [8, 9, 35, 36, 37, 38, 39, 40, 45, 46]) != -1) // Special keys
return true;
if (keyCode == 190) { // Dot
if (v.indexOf('.') == -1) { // no dot in input
if (v == '') // Val is empty? add '0' (value becomes 0.)
o.val('0');
return true;
}
return false;
}
isNumeric = (keyCode >= 48 /* 0 */ && keyCode <= 57 /* 9 */) ||
(keyCode >= 96 /* NUMPAD0 */ && keyCode <= 105 /* NUMPAD9 */);
modifiers = (e.altKey || e.ctrlKey || e.shiftKey);
return isNumeric || modifiers;
}