Gravity Perks // GP Read Only // Disable Backspace for IE to Prevent Navigating Backwards
<script type="text/javascript">
( function( $ ) {
$( document ).bind( 'gform_post_render', function() {
$( 'input[readonly="readonly"]' ).on( 'keydown', function( event ) {
event.preventDefault();
} );
} );
} )( jQuery );
</script>