Multiselect dropdownlist with Checkbox in asp.net

I'm using bootstrap multiselect dropdown list with checkbox.its working well without master form.but its not working with master forms:

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<script type="text/javascript" src="http://ift.tt/1fEahZI"></script>
    <link href="http://ift.tt/1L4JlTu"
        rel="stylesheet" type="text/css" />
    <script type="text/javascript" src="http://ift.tt/1L4Jne4"></script>
    <link href="http://ift.tt/1EzpWpf"
        rel="stylesheet" type="text/css" />
    <script src="http://ift.tt/1EzpXJJ"
        type="text/javascript"></script>
    <script type="text/javascript">
        $(function() {
            $('[id*=lstFruits]').multiselect({
                includeSelectAllOption: true
            });
        });
    </script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
 <asp:ListBox ID="lstFruits" runat="server" SelectionMode="Multiple">
        <asp:ListItem Text="Mango" Value="1" />
        <asp:ListItem Text="Apple" Value="2" />
        <asp:ListItem Text="Banana" Value="3" />
        <asp:ListItem Text="Guava" Value="4" />
        <asp:ListItem Text="Orange" Value="5" />
    </asp:ListBox>
    <asp:Button ID="Button1" Text="Submit" runat="server" OnClick="Submit" />

</asp:Content>

C# Code:

 protected void Submit(object sender, EventArgs e)
    {
        string message = "";
        foreach (ListItem item in lstFruits.Items)
        {
            if (item.Selected)
            {
                message += item.Text + " " + item.Value + "\\n";
            }
        }
        ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", "alert('" + message + "');", true);
    }

I have referred

this article:

by using this code i have a drop down list on the Page but the drop down click event it not firing i couldn't see any list. kindly assist me to solve this.