java script validation to allow only numbers comma and hyphen..... !

function ValidateNumbers()
{
 var SpecialCharachter = /[^0-9,\-]/;
 var txttagPages = document.getElementById("<%= txttagpages.ClientID %>").value;

if (SpecialCharachter.test(txttagPages.trim())) {
                 
 message = 'txt  selection contain extra Characters  remove it and try !';
}
}