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<script>
$(function () {
$("# acMenu dt"). on ("click", function () {
$(this) .next (). slideToggle ();
$(this) .toggleClass ("active");// additional part
});
});
</script>

The above code does not open on i7.
* JQuery v1.9.1 is used.

Chrome, firefox, etc. work.
Is it a browser or PC environment problem?