how can I use a popup window to send looed data to mysql?

I have a form that collects the personal info then it loops through items so the user can add a row of addition items. ​Upon submitting my form,the personal data is inserted into a mySQL table, it then inserts the items into the items table by a cfloop. It works great but my clients now wants me to incorporate a popup window upon submitting the form. The popup will ask if they "Are sure your order is complete." If yes, then the form is submitted. How can I get the popup window to send the data to the appropriate tables?

Below is the cfloop I am using:

<cfloop from="1" to="#getnumba#" index="idx">

            <!--- At first, it displays the original one row form --->

            <!--- User enters the data and hits "Add Another" --->

            <!--- The page reloads with the data already entered and creates a new blank row that is ready for data entry --->

            <tr>

                <cfif isdefined ("form.qty#idx#")>

                    <Td align="center"><cfcfinput type="text" name="qty#idx#" value="#form["qty" & idx]#" size="10" class="right"></TD>

                    <cfelse>

                    <Td align="center"><cfcfinput type="text" name="qty#idx#" size="10" class="right"></TD>

                </cfif>

                <cfif isdefined ("form.item#idx#")>

                    <Td align="center"><cfcfinput type="text" name="item#idx#" value="#form["item" & idx]#" size="40" class="right"></TD>

                    <cfelse>

                    <Td align="center"><cfcfinput type="text" name="item#idx#" size="40" class="right"></TD>

                </cfif>

                  <cfif isdefined ("form.unit#idx#")>

                    <Td align="center"><cfcfinput type="text" name="unit#idx#" value="#form["unit" & idx]#" size="10" class="right"></TD>

                    <cfelse>

                    <Td align="center"><cfcfinput type="text" name="unit#idx#" size="10" class="right"></TD>

                </cfif>

                <cfif isdefined ("form.total#idx#")>

                    <Td align="center"><cfcfinput type="text" name="total#idx#" value="#form["total" & idx]#" size="10" class="right"></TD>

                    <cfelse>

                    <Td align="center"><cfcfinput type="text" name="total#idx#" size="10" class="right"></TD>

                </cfif>

            <td align="center"><cfinput type="button" name="add" value="Add Another Item" onClick="javascript:getnutherline();"></td>

            </tr>          

        </cfloop>