Script to extract emails from WebPage:

var text = document.body.innerHTML;
function extractEmails (text)
{
    return text.match(/([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+)/gi);
}

document.write(extractEmails(text).join('
'));

alert(extractEmails(text).join('\n'));