I want to add a scrollbar to div id="kryesore" in mainpage,when i try it doesnt work.Can you tell me what can i do and how can i fix it?


Code:
<body class="main_body">
        <div id="kryesore">
        <div id="header">
            <div id="headerLeft">
                <div class="msgs">Mesazh</div>
...