iFrame Validation
<p>I currently have an iframe within my main page that has a number of checkboxes that need to be actioned prior to leaving the iframe, i.e, if the user commences checking the checkboxes and half way through they then click back on the main page, i.e leaving the iframe, I would like to be able to trap/validate that they have left the iframe and prompt them with a message indicating this, say with a "Note: You will lose all data entered here - Leave: Yes/No?" type message.</p>

<p>Any help/websites would be appreciated.</p>

<p>Thanks.
Tony.</p>
