Untitled

jQuery Isotope - Filtering with AND (exclusion)
<ul class="project-tags">
    <li><a class="all selected" data-filter="all">All</a></li>
    <li><a class="" title="Filter1" data-filter=".Filter1">Filter1</a></li>
    <li><a class="" title="Filter2" data-filter=".Filter2">Filter2</a></li>
    <li><a class="" title="Filter3" data-filter=".Filter3">Filter3</a></li>
    <li><a class="" title="Filter4" data-filter=".Filter4">Filter4</a></li>
</ul>


var $iso = $('#projects');

$.filterIsotope = function(filter)
{
    $iso.isotope({ filter:filter });
}

$('.sidebar a').click(function(event){
    //$("body,html").animate({scrollTop:125});
   // event.preventDefault();
    var cat = $(this).attr('data-filter'),
        $links = $('#work-grid2 .sidebar a:not(.all)'),
        filter = "";
    if (cat == 'all')
    {
        $links.removeClass('selected');
    }
    else
    {
        $('.sidebar a.all').removeClass('selected');
    }
    $(this).toggleClass('selected');
    $links.each(function(index){
        if ($(this).hasClass('selected'))
        {
            if (filter.length) filter += ", ";
            filter += $(this).attr('data-filter');
        }
    });
    if (filter == "") $('.sidebar a.all').addClass('selected');
    $.filterIsotope(filter);
})