Is it not possible to have both AllowRowSelect and OnRowClick in the ClientSettings?

I can get either one to work properly when the other is not present.  With the setup below the OnRowClick functions, but my clicked row is not highlighted anymore.

<ClientSettings EnablePostBackOnRowClick="true">
<Selecting  AllowRowSelect="True" />
<ClientEvents OnRowClick="OnRowClick" />
</ClientSettings>

<script language="javascript"  type="text/javascript">
function OnRowClick(index)
{
    var ContactId = this.GetCellByColumnUniqueName(this.Rows[index], "ContactId").innerHTML;
    var AccountId = this.GetCellByColumnUniqueName(this.Rows[index], "AccountId").innerHTML;
    var FullName = this.GetCellByColumnUniqueName(this.Rows[index], "FullName").innerHTML;
   
    document.getElementById('<%= hdnContactId.ClientID %>').value = ContactId;
    document.getElementById('<%= hdnAccountId.ClientID %>').value = AccountId;
    document.getElementById('<%= hdnContactName.ClientID %>').value = FullName;
   
    return false;
}
</script>

I found my problem right after I posted this.  the return false in my javascript function was stopping the row from getting highlighted.