Edit CRM web source code

I am looking to make our CRM 2016 web page WCAG compliant.  In order to do this, I need to edit the CRM source code and add <noscript> sections into several sections.

What files in the CRM web page would I need to modify to update this code?

The error I get from the WCAG checker is:

wcag 1.0 level a check 90 script must have a noscript section CRM

These are two sections of the code that are flagged as known problems:

Line 147:

<script type="text/javascript" language="JavaScript">

document.getElementById("noScript").style.display = "none";

</script>

Line 197:

<script type="text/javascript">

function SelectOption(option) {

var i = document.getElementById('optionSelection');

i.value = option;

document.forms['options'].submit();

return false;

}

</script>