$("input[name=number]").keydown(function (e) {
	// Allow: backspace, delete, tab, escape, enter and .
	if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
		 // Allow: Ctrl+A, Command+A
		(e.keyCode == 65 && ( e.ctrlKey === true || e.metaKey === true ) ) || 
		 // Allow: home, end, left, right, down, up
		(e.keyCode >= 35 && e.keyCode <= 40)) {
			 // let it happen, don't do anything
			 return;
	}
	// Ensure that it is a number and stop the keypress
	if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
		e.preventDefault();
	}
});