Simplest Accordion Menu using jQuery and CSS

Introduction:
This article explain you to create accordion menu using jQuery and css .
Description:
Below  code is used for creating a vertical collapsible/accordion menu that allows to expand and collapse.
To implement this we need to write the code like as shown below

HTML:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Angular JS</title>
    <link href="css/master.css" rel="stylesheet" />
    <link href="css/collapsemenu.css" rel="stylesheet" />
    <link href="Content/bootstrap.css" rel="stylesheet" />
    <script src="scripts-common/jquery-2.1.4.js"></script>
</head>
<body>
    <div class="header">
    </div>
    <div id="sliderNavigation" style="border: 0px solid #000;">
        <div class="page_container_left font" style="border: 0px solid #000;" id="containernavigation">
            <div id="admin_menu" runat="server">
                <div id="setting_tab" runat="server" clientidmode="Static" class="collapse_button collapse_button_gradient" onmouseover="this.className='collapse_button collapse_button_gradient_hover'" onmouseout="this.className='collapse_button collapse_button_gradient'" onclick="expand('setting_menu')">
                    <a class="setting_tab">Setting</a>
                </div>
                <div id="setting_menu" class="collapsemenu">
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                    <a class="collapsemenu_item" href="#">Setting</a>
                </div>

                <div id="home_tab" runat="server" clientidmode="Static" class="collapse_button collapse_button_gradient" onmouseover="this.className='collapse_button collapse_button_gradient_hover'" onmouseout="this.className='collapse_button collapse_button_gradient'" onclick="expand('home_menu')">
                    <a class="setting_tab">Home</a>
                </div>
                <div id="home_menu" class="collapsemenu">
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                    <a class="collapsemenu_item" href="#">Home</a>
                </div>

                <div id="about_tab" runat="server" clientidmode="Static" class="collapse_button collapse_button_gradient" onmouseover="this.className='collapse_button collapse_button_gradient_hover'" onmouseout="this.className='collapse_button collapse_button_gradient'" onclick="expand('about_menu')">
                    <a class="setting_tab">About</a>
                </div>
                <div id="about_menu" class="collapsemenu">
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                    <a class="collapsemenu_item" href="#">About</a>
                </div>
            </div>
        </div>

        <div style="border: 0px solid #000;" id="containerview" class="page_container">
        </div>

    </div>

    <div class="footer">
        © 2016 www.logicspark.in All Rights Reserved. The content is copyrighted to Muhammad Asif.
    </div>
</body>

</html>

Master CSS

body {
    margin: 0px;
    padding: 0px;
    font-family: "Trebuchet MS", Verdana;
    font-size: 13px;
    font-weight: normal;
    color: #4D5569; /*4D5569*/
    background-color: #EAF2F9;
}

.header {
    height: 35px;
    border-bottom: solid 1px rgba(255,255,255,1);
    background-color: #fff;
    color: #969696;
    z-index: 1;
    width: 100%;
    position: fixed;
    top: 0px;
    left: 0px;
    background: rgb(89,106,114); /* Old browsers */
    background: -moz-linear-gradient(left, rgba(89,106,114,1) 0%, rgba(206,220,231,1) 2%); /* FF3.6-15 */
    background: -webkit-linear-gradient(left, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(to right, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#596a72', endColorstr='#cedce7',GradientType=1 ); /* IE6-9 */
}

.footer {
    width: 100%;
    bottom: 0px;
    position: fixed;
    text-align: center;
    height: 30px;
    font-weight: bold;
    font-family: "Trebuchet MS", Verdana;
    font-size: 13px;
    background: rgb(89,106,114); /* Old browsers */
    background: -moz-linear-gradient(left, rgba(89,106,114,1) 0%, rgba(206,220,231,1) 2%); /* FF3.6-15 */
    background: -webkit-linear-gradient(left, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(to right, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#596a72', endColorstr='#cedce7',GradientType=1 ); /* IE6-9 */
}




collapsemenu css

.collapse_button {
    height: 35px;
    width: 100%;
    line-height: 30px;
    border: solid 0px 0px 0px 0px #172b37;
    cursor: pointer;
    font-size: 13px;
    font-weight: normal;
    color: #000;
    background-color: #40535E;
    padding-left: 5px;
    z-index: 1000;
}
    .collapse_button a:hover {
        text-decoration: none;
    }

.collapsemenu {
    display: none;
    width: 100%;
    margin: auto;
    margin-bottom: 0px;
    margin-top: 0px;
    padding: 1px;
    z-index: -1000;
    overflow: auto;
    }

.collapsemenu_item {
    display: block;
    padding-top: 3px;
    padding-bottom: 3px;
    padding-left: 10px;
    border-bottom: solid 1px #d5d3d3;
    height: 30px;
    white-space: nowrap;
    z-index: -1000;
    width: 100%;
    color: #4D5569;
    text-decoration: none !important;
}
    .collapsemenu_item:hover {
        color: #000;
        text-decoration: none;
       
    }

.collapse_button_gradient {
    border: 1px solid #e2e2e2;
    background: rgb(89,106,114); /* Old browsers */
    background: -moz-linear-gradient(left, rgba(89,106,114,1) 0%, rgba(206,220,231,1) 2%); /* FF3.6-15 */
    background: -webkit-linear-gradient(left, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(to right, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#596a72', endColorstr='#cedce7',GradientType=1 ); /* IE6-9 */
}

.collapse_button_gradient_hover {
    border: 1px solid #e2e2e2;
    background: rgb(89,106,114); /* Old browsers */
    background: -moz-linear-gradient(left, rgba(89,106,114,1) 0%, rgba(206,220,231,1) 2%); /* FF3.6-15 */
    background: -webkit-linear-gradient(left, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(to right, rgba(89,106,114,1) 0%,rgba(206,220,231,1) 2%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#596a72', endColorstr='#cedce7',GradientType=1 ); /* IE6-9 */
}
/*menu icon*/
.setting_tab {
    background: url(images/menu-settings.png) no-repeat,url(images/menu-arrow.png) no-repeat;
    background-position: 5px center,140px center;
    display: block;
    text-indent: 30px;
    white-space: nowrap;
    font-weight: bold;
}

Java Scipt :

  var flag = 0;
        var slidedMenuId = "";
        function expand(menuid) {
            if (slidedMenuId != menuid) {
                $(".collapsemenu").slideUp(400);
                $('#' + menuid).slideDown(400);
                slidedMenuId = menuid;
            }
            else {
                $(".collapsemenu").slideUp(400);
                $('#' + menuid).slideUp(400);
                slidedMenuId = "";
            }
        }
DEMO

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