Update the intro text on the Marketo Social Sign-In box.

gistfile1.html

<script type="text/javascript">
// Add this code in a "HTML" block in the Marketo Landing Page Editor.
 
// Use jQuery.noConflict just in case.
if ( typeof $jQ == 'undefined' ) { var $jQ = jQuery.noConflict(); }

//Replace 'Register with:" with your desired text.
$jQ(document).ready(function() {
  $jQ('.cf_sign_on_caption').html('Register with:');
})
  
</script>