iScroll inside iScroll - nested iScroll unexpected

Question

I have 2 lists and I use iScroll for vertical scrolling.

The second list is inside the first list.

When I scroll the second list, the first list is also scrolling.
I want that when I scroll the inside list (the second list), the main list (the first list) will not scroll.

How can I do that?

Here is an Example:

<div id="wrapper" style="overflow: hidden;">
    <div id="scroller">
        <ul id="thelist">
            <li>Pretty row 1</li>
            <li>Pretty row 2</li>
            <li>Pretty row 3</li>
            <li>Pretty row 4</li>
            <li>Pretty row 5</li>
            <li>Pretty row 6</li>
            <li id='inWarper'>
                <div  id="scroller">
                    <br/>
                    <ul>
            <li>Pretty row 1</li>
            <li>Pretty row 2</li>
            <li>Pretty row 3</li>
            <li>Pretty row 4</li>
            <li>Pretty row 5</li>
            <li>Pretty row 6</li>
            <li>Pretty row 7</li>
            <li>Pretty row 8</li>
            <li>Pretty row 9</li>
            <li>Pretty row 10</li>
                    </ul>
                </div>
            </li>
            <li>Pretty row 7</li>
            <li>Pretty row 8</li>
            <li>Pretty row 9</li>
            <li>Pretty row 10</li>
            <li>Pretty row 11</li>
            <li>Pretty row 12</li>
            <li>Pretty row 13</li>
            <li>Pretty row 14</li>
            <li>Pretty row 15</li>
            <li>Pretty row 16</li>
            <li>Pretty row 17</li>
            <li>Pretty row 18</li>
        </ul>
         <br/>
    </div>
</div>

And in Load event:

myScroll = new iScroll('wrapper');
myScroll2 = new iScroll('inWarper');

CSS:

#scroller ul {
list-style: none;
padding: 0;
margin: 0;
width: 100%;
text-align: left;
}

#scroller {
position: absolute;
z-index: 1;
/* -webkit-touch-callout: none; */
-webkit-tap-highlight-color: rgba(0,0,0,0);
width: 100%;
padding: 0;
}

#wrapper {
position: absolute;
z-index: 1;
top: 45px;
bottom: 48px;
left: 0;
width: 100%;
background: #aaa;
overflow: auto;
    height:150px;
}

#inWarper {
    color:red;
position: absolute;
z-index: 1;
height:100px;
left: 0;
width: 100%;
background: #aaa;
overflow: auto;
}

JSFiddle: http://jsfiddle.net/PPtWs/64/

Answer 1

The idea to fix this problem is to prevent (stop) propagation of the scrolling firing event to the parent div

This is how to fix it

myScroll = new iScroll('wrapper');
myScroll2 = new iScroll('inWarper' , {
    onBeforeScrollStart : function(e) { 
    e.stopPropagation();
}});

Example http://jsfiddle.net/khaledalyawad/4p7t8ymp/