I added this in employee print menu which print report of employee data

I need to make popup showen when i click on this submenu before printing report 
any help?

This is the code:

<report
id="report_payroll_excuse_absence"
model="hr.employee"
string="تبرير غياب"
name="gescoly_timeoff.report_employee_execuse_absence"
file="gescoly_timeoff.report_employee_execuse_absence"
report_type="qweb-pdf"
/>

<template id="report_employee_execuse_absence">
<t t-call="web.html_container">
<t t-foreach="docs" t-as="doc">
<t t-call="web.external_layout">
<div class="page" style="direction: rtl;">
<h3 class="text-center">
تبرير غياب(الإدارة العامة)

</h3>
<br/>

<div class="bordered text-right table-******** "
style="border:1px solid black; padding:10px; font-size:20px; font-weight:bold;">
<div class=" row">
<div class=" text-right col-4 ">
الأخ/الأخت:
<span t-field="doc.name"/>
</div>
<div class=" text-left col-3">
الوظيفة:
<span t-field="doc.job_title"/>
</div>