vb.net - How to show Previous and next images using javascript -


in code show images using repeater 

     <asp:repeater id="rptconvention" runat="server" >                     <itemtemplate>                     <div   style="float:left; width:200px;height:180px"   >                                                 <a href="pop-ups/viewimage.aspx?lightbox[width]=510&amp;lightbox[height]=415&amp;imgid=<%#eval("id")%>" class="lightbox textcolorblue">                             <img  src='<%= settings.fransupporturl %><%# "convension/images/" & eval("img")%>' alt='<%#eval("name")%>' width="180px" height="120px" style="border:0px;"   />                     </a>                     <div style="text-align:center;float:left; padding-top:5px; width:180px;  font-size:12px;">  <%# if(eval("description").tostring().length < 25, eval("description"), eval("description").substring(0, 25))%>  </div>                      <div   style="text-align:center;float:left; padding-top:5px; width:180px;  font-size:13px;   ">                      <a style="width: 81px!important;" href="pop-ups/viewimage.aspx?lightbox[width]=510&amp;lightbox[height]=415&amp;imgid=<%#eval("id")%>" class="lightbox textcolorblue">view</a> | <asp:linkbutton class="textcolorblue"  id="btndownload" commandname="download"  commandargument='<%#eval("downloadimg")%>' runat="server"   >download </asp:linkbutton>                      </div>                     </div>                      <div class="dvspacingconv"> &nbsp;</div>                     </itemtemplate>                     <footertemplate>                      </footertemplate>                 </asp:repeater>

on click show image using light box popup , open new page here html of that

 <div class="popup_con_ph nopad">         <img id="imgconvention" style="width: 500px; height: 308px;" runat="server" />         <div style="margin-top:8px; text-align:center;">            <input type="button" id="btndownload"   value="download"  onclick="downloadimage();"             style="height: 28px !important; line-height: 10px !important;" tabindex="2" />              <input type="button" id="btnclose"   value="close"  onclick="closepopup();"             style="height: 28px !important; line-height: 10px !important;" tabindex="2" />             </div>     </div>

i want put here previous , next button , show previous , next images. how can this..

add onclick function in previous , next button
in function, can below
$('#id').attr('src', 'imgpath');


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