I have a contact form written in php embedded inside an <iframe> that resides in an existing web app. There's basically 3 parts:
1) the <iframe> that has a source of contactus.htm
2) contactus.htm posts to contactus_submit.php which returns results that populate the inside of the <iframe>
3) a link on contactus_submit.php that the user is shown after submitting the form that allows them to click the link to return to the home page.
Problem: How do I set the target of that link to be the parent element and not just re-populate the iframe with a new copy of the homepage? I.e., I want the <a href> link to literally redirect their entire browser back to www.domainurl.com
What would be the best way to accomplish such a task?