Custom Script only works on Main Page

Hello,
i have added a custom script to the funtions.php and this works well for me but it only works on the Main Page and no where else.
I dont know if this error is caused by enfold or wrong code?

add_action('wp_footer', 'hide_on_sent');

function hide_on_sent(){
?>
<script type="text/javascript">
document.addEventListener( 'wpcf7mailsent', function( event ) {
    setTimeout(function() {
  $('#hideonsent').hide(); }, 0);
	setTimeout(function() {
  $('#hideonsent').show(); }, 5000);
	setTimeout(function() {
  $('.wpcf7-mail-sent-ok').hide(); }, 5000);
}, false );
</script>
<?php
}

Hope there is somebody who can help me cause i try since hours with no effect.

Thanks,
Banshee350