Absolute div does not scroll with page

Question

From the fiddle below, I am trying to make the 'inner-navigation' div absolutely positioned so it stays fixed within the 'compare-display' box. The problem I am having is that when you scroll, the 'inner-navigation' div does not stay fixed. How can I remedy this problem?

Here is my fiddle:

http://jsfiddle.net/Cd9eZ/

HTML Code

<div class="compare-display">
    <div class="table">
        <div class="source-compare col-50">
            <div class="page"></div>
        </div>
        <div class="navigation-compare">
            <div class="inner-navigation"></div>
        </div>
        <div class="target-compare col-50">
            <div class="page"></div>
        </div>
    </div>
</div>

CSS Code

.table {
    display: table;
    height: 100%;
    width: 100%;
}
.table > div {
    display: table-cell;
    vertical-align: top;
}
.table > .col-50 {
    width: 50%;
    background: green;
}
.compare-display {
    position: relative;
    overflow: auto;
    height: 200px;
}
.compare-display .navigation-compare {
    min-width: 50px;
    background: blue;

}
.compare-display .page {
    margin: 20px;
    height: 500px;
    background: orange;
}
.compare-display .inner-navigation {
    position: absolute;
    width: 50px;
    top: 0;
    bottom: 0;
    background: red;
}

Answer 1

Think you want position:fixed rather than position:absolute.

Fiddle

CSS Position Documentation