<li class="dropdown">
 <a class="dropdown-toggle" data-toggle="dropdown" data-hover="dropdown" onclick="location.href='@Url.Action("Reports", "Reports")'" href='#'>Reports</a>
 <ul class="dropdown-menu dropdown-menu-left animated-2x animated fadeIn">
 <li>@Html.ActionLink("IT", "Reports", "Reports",new {@id="ExpandIT" })</li>
 <li>@Html.ActionLink("Sales", "Reports", "Reports", new {@id="Expandsales" })</li>
</ul>

<div class="container">
    <h2>Reports</h2>

        <div class="panel-group" id="accordion">
            <div class="panel panel-default">
                <div class="panel-heading">
                    <a class="collapse-toggle collapsed" data-toggle="collapse" data-parent="#accordion" href="#ITFilter"> IT Reports  </a>
                </div>
                <div id="ITFilter" class="panel-collapse panelcollapse collapse">
                    <div class="panel-body">
                        @Html.Partial("~/Views/IT/IT.cshtml", Model.clsIT)
                    </div>
                </div>
            </div>

            <div class="panel panel-default">
                <div class="panel-heading">
                    <a class="collapse-toggle collapsed" data-toggle="collapse" data-parent="#accordion" href="#SalesFilter">
                       Sales Reports
                    </a>
                </div>
                <div id="SalesFilter" class="panel-collapse panelcollapse collapse">
                    <div class="panel-body">
                        @Html.Partial("~/Views/sales/Sales.cshtml", Model.clsSales)
                    </div>
                </div>
            </div>

        </div>

    </div>

$('#ExpandIT').click(function (e) {
            debugger;
            $('#accordion #ITFilter').removeData('bs.collapse')
                .collapse({ parent: false, toggle: false })
                .collapse('show')_Laouyt
                .removeData('bs.collapse')
                .collapse({ parent: '#accordion', toggle: false });

        });
        $('#ExpandSales').click(function (e) {
            debugger;
            $('#accordion #SalesFilter').removeData('bs.collapse')
                .collapse({ parent: false, toggle: false })
                .collapse('show')
                .removeData('bs.collapse')
                .collapse({ parent: '#accordion', toggle: false });

        });