A very simple pure JavaScript plugin to expand and collapse nested html list!

To make any list collapsible only give .col_ul class to desired ul tag!

for example i want this list to have collapsible elements so i just give it a col_ul class

<ul class="col_ul">
   <li>helllo</li>
</ul>

now create multi level list as

<ul class="col_ul">
    <li> Cities
        <ul>
            <li>karachi</li>
        </ul>
    </li>

now when you run it, it will not collapse your multi level list! so just add span around mult level li's text as

<ul class="col_ul">
    <li> <span>Cities</span>
        <ul>
            <li>karachi</li>
        </ul>
    </li>

now it will work perfectly ;) You can add infinite levels to your list and it will work flawlessly !

<ul class="col_ul">
    <li> <span>Cities</span>
        <ul>
            <li><span>karachi</span>
                <ul>
                    <li>North</li>
                </ul>
            </li>
        </ul>
    </li>