comma separator function

My code is allowing AlphaNUmeric and Dash/Minus(-), It need to accept Commas(,) also.

Can someOne please help me on this.

function AlphaNumericOnlyDash() {

if (!((event.keyCode >= 48 && event.keyCode <= 57) || event.keyCode == 45 || (event.keyCode >= 65 && event.keyCode <= 90) || (event.keyCode >= 97 && event.keyCode <= 122))) {

CancelEvent();

}

}