Change
<script>
$(document).ready(function(){
$(".navigation-buttons a.cart-count").click(function(){
setTimeout( function(){
$('.kn_style').text('Změněno');
} , 7000 );
})});
</script>
Change
<script>
$(document).ready(function(){
$(".navigation-buttons a.cart-count").click(function(){
setTimeout( function(){
$('.kn_style').text('Změněno');
} , 7000 );
})});
</script>