<script type="text/javascript">
function stopPropagation(e) {
if (e.stopPropagation)
e.stopPropagation();
else
e.cancelBubble = true;
}

$(document).bind('click',function(){
$('#test').css('display','none');
});

$('#test').bind('click',function(e){
stopPropagation(e);
});
</script>

<script type="text/javascript">
$(document).bind('click',function(e){
var e = e || window.event; //瀏覽器兼容性
var elem = e.target || e.srcElement;
while (elem) { //循環判斷至跟節點，防止點擊的是div子元素
if (elem.id && elem.id=='test') {
return;
}
elem = elem.parentNode;
}

$('#test').css('display','none'); //點擊的不是div或其子元素
});
</script>