LP cname upon form submission

[Anonymous]

We have utilized different landing page cnames across domains.  One challenge we have not solved is how to insure the cname remains consistent upon a form submission or clicked link.  If a user arrives at pages.domain2.com/landingpage and submits a form, we would like them to arrive at pages.domain2.com/thankyou.  Currently upon form submission or followed link, the unique landing page cname reverts back to the primary.

[Adam_Dost2]

Thank you Sandy!

[SanfordWhiteman · Accepted solution]

And: http://blog.teknkl.com/keeping-thank-you-pages-on-the-same-cname-as-marketo-lps/

[Cayce_Armstrong]

Hi Sanford Whiteman‌ - I came across this community post and your linked blog post because we are just starting to use Marketo Landing Pages and are running into this same issue with our Thank You pages. I know nothing about JS and know this is probably a dumb question, but where do you add the script you provided in order to get this code to execute?

[SanfordWhiteman]

Just inside the closing </body> tag.

[Cayce_Armstrong]

Thanks so much for the quick response! I just gave it a try and it worked

[SanfordWhiteman]

MktoForms2.whenReady(function(form){
    form.onSuccess(function(vals,tyURL){
        var loc = document.createElement('a');
        loc.href = tyURL;
        loc.hostname = document.location.hostname;
        document.location.href = loc.href;
        return false;
    })
})

[Adam_Dost2]

For someone who is not technical, where would this code be placed?