hide list items in dropdownlist based on checkboxes

I have a report with 4 checkboxes that changes what the report displays. There is also a search feature so the user can search for certain companies. But depending on what checkbox is checked, only certain search options in the dropdownlist need to be displayed.

<asp:DropDownList runat="server" ID="ddlSearchBy">
     <asp:ListItem Text="All Job Owners" Value="null" ></asp:ListItem>
     <asp:ListItem Text="Job Owner" Value="Customer" ></asp:ListItem>
     <asp:ListItem Text="Col Member" Value="Col Member" ></asp:ListItem>
     <asp:ListItem Text="Del Member" Value="Del Member" ></asp:ListItem>
</asp:DropDownList> 

So depending on which checkbox is selected I only want certain ListItems shown.

$(document).ready(function() {
        $('#rbNormal').change(function() {
            if($(this).is(":checked")) {
                 //hide third listitem
            }
        });

        $('#rbDailyReport').change(function () {
            if ($(this).is(":checked")) {
                 //hide third and forth listitem
            }
        });
    });