Can't navigate modal
Hi guys, i want to use arrow to navigate from one modal to another one. Now i can navigate to the next but not to the prev.

<div>
<ul class="table-view" style="margin-top: 0 !important;">
    <li class="table-view-cell giornoTable">
        <a class="navigate-right" href="#modalLunedi">
        Lunedì
        </a>
    </li>
    <li class="table-view-cell giornoTable">
        <a class="navigate-right" href="#modalMartedi">
        Martedì
        </a>
    </li>
    <li class="table-view-cell giornoTable">
        <a class="navigate-right" href="#modalMercoledi">
        Mercoledì
        </a>
    </li>
</ul>
</div>


<div id="modalLunedi" class="modal">
        <header class="bar bar-nav">
            <a class="icon icon-close pull-right" href="#modalLunedi"></a>
            <h1 class="title giornoTitModal" >Lunedì</h1>
            <a href="#modalMartedi">    
                <h3 class="pull-left frecciaDxModal">
                    <span class="icon icon-right-nav"></span>
                </h3>
            </a>
        </header>

        <div class="content">
            <p>testo</p>
        </div>

```
</div>

<!-- Modal Martedì-->
<div id="modalMartedi" class="modal">
    <header class="bar bar-nav">
        <a class="icon icon-close pull-right" href="#modalMartedi"></a>
        <h1 class="title giornoTitModal">Martedì</h1>
        <a href="#modalLunedi"> 
            <h3 class="pull-left frecciaSxModal">
                <span class="icon icon-left-nav"></span>
            </h3>
        </a>
        <a href="#modalMercoledi">  
            <h3 class="pull-left  frecciaDxModal">
                <span class="icon icon-right-nav"></span>
            </h3>
        </a>
    </header>

    <div class="content">
        <p>testo</p>
    </div>
</div>

<!-- Modal Mercoledì-->
<div id="modalMercoledi" class="modal">
    <header class="bar bar-nav">
        <a class="icon icon-close pull-right" href="#modalMercoledi"></a>
        <h1 class="title giornoTitModal">Mercoledì</h1>
        <a href="#modalMartedi">    
            <h3 class="pull-left frecciaSxModal">
                <span class="icon icon-left-nav"></span>
            </h3>
        </a>
        <a href="#modalGiovedi">    
            <h3 class="pull-left frecciaDxModal">
                <span class="icon icon-right-nav"></span>
            </h3>
        </a>
    </header>

    <div class="content">
        <p>testo</p>
    </div>
</div>
```
