[jQuery] multiple checkboxes showing/hiding a div

[jQuery] multiple checkboxes showing/hiding a div


Folks,
I have two checkboxes. When either one is checked, I would like to
show a div. When both are not checked, then I want the div hidden.
However, I've only been able to use toggle to show and hide the div
only when checking/unchecking one checkbox. It's not quite what I
need. So far I have this:
js:
$("#check_1").click(function(){ $("#special").toggle("slow"); });
$("#check_2").click(function(){ $("#special").toggle("slow"); });
html:
<input type="checkbox" id="check_1" name="check_options[]" value="1" /