<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="js/test.js"></script>
<script type="text/javascript">
$(function () {
$('.tree li:has(ul)').addClass('parent_li').find(' > span').attr('title', '关闭');
$('.tree li.parent_li > span').on('click', function (e) {
var children = $(this).parent('li.parent_li').find(' > ul > li');
if (children.is(":visible")) {
children.hide('fast');
$(this).attr('title', '展开').find(' > i').addClass('icon-plus-sign').removeClass('icon-minus-sign');
} else {
children.show('fast');
$(this).attr('title', '关闭').find(' > i').addClass('icon-minus-sign').removeClass('icon-plus-sign');
}
e.stopPropagation();
});
});
</script>
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