how to run java script code on this page ?

[sonatine]

i have a simple question but never could find answer for that.
one of my websites is : http://www.apkpro.ir/
and i have a popup on it.
its code is :

<script type="text/javascript">
var uid = '28574';
var wid = '53913';
</script>
<script type="text/javascript" src="http://cdn.popcash.net/pop.js"></script>

now i want a simple template to do this :
open my website, go to a specific page and run this code on that page to load popup?

i can do first part ( going to my website, some pause and then go to a specific url and other things i want it to do) but how can i load that code ?
i used Run java function in project maker but no result

any help will be appreciated or maybe someone who make a small template for this can really help me to understand it much better.