radiobutton listitems with text and image properties

Question

I used this cide for radiobuttons list,but my requirement is between symbol and text i want to put an image,could any one give me guidelines

<asp:radiobuttonlist AutoPostBack="true" CssClass="text" id="rdContactType" runat="server">
<asp:listitem id="option1" runat="server" value="Student">

<asp:listitem id="option2" runat="server" value="Staff" />
<asp:listitem id="option3" runat="server" value="Parents" />
<asp:listitem id="option4" runat="server" value="Admin/Principal" />
<asp:listitem id="option5" runat="server" value="Management" />
</asp:radiobuttonlist>