How do you imagine this to work?
You open your web page with a link and target="_blank".
So I think you are not able to avoid the closing of this (different) page from inside LimeSurvey.
If you add it as an IFrame in a question of type "text display" and a separate group this might work.
<iframe allowfullscreen="" frameborder="0" height="800" src="https://your page.nl/public/index.php/" width="100%">
Add this javascript snippet
Code:
<script type="text/javascript" charset="utf-8">
$(document).ready(function(){
$('#ls-button-submit').hide();
setTimeout(function () {
$('#ls-button-submit').show();
}, 300000);
});
</script>
It will hide the submit button for 5 minutes = 300000milliseconds.
But there are other things.
Is there a special reason that you force your respondents to scroll and scroll and scroll?
The majority of the questions in parts 2-4 you can replace by some array questions.
But - of course - up to you.
Joffm
Please, if you send a lss export, include only the relevant questions (not 105).