How to upload Image in ajax html editor using asp.net

use client side script ......
<script type="text/javascript">
function addIMAGE_LOGO()
{
//debugger;
var editor = $find("Editor2");
var editPanel = editor.get_editPanel();
var designPanel = editPanel.get_activePanel();
designPanel._saveContent();
designPanel.insertHTML('<img alt="" src="Images/Logo.jpg" style="width: 40px" />');
}
</script>

and use this server side code in page_load event....

btnAddImage.Attributes.Add("onclick", "addIMAGE_LOGO()");