Partial page are not loading on same page - asp.net-mvc-3

Question

Here is my code has been implemented in a .chtml page. When I click on button corresponding page open in new page instead of same page. I want to open that partial page on same view page. please help me.. Thanks in advance..
<div class="contentbox">
<div class="contentmain">
#using (Ajax.BeginForm("SearchForEdit", "Home", FormMethod.Post, new AjaxOptions { UpdateTargetId = "update_panel", InsertionMode = InsertionMode.Replace }, new { #class = "form-horizontal" }))
{
<ul>
<li><div class="leftc_box" style="width:150px;">Enter Id or Song Name </div>
<div class="rightc_box">
<input type="text" name="entryid" value="" placeholder="Enter Id or Song Name" style="height: 30px;" />
</div>
</li>
<li>
<div class="leftc_box" style="margin-left:153px;"><input type="image" name="" src="../../Content/img/submit.png" value="" /></div>
</li>
</ul>
<div id="update_panel">#Html.Partial("SearchForEdit")</div>
}
<div>
<table style="border-style: solid; border-width: thin; height: auto; width: 100%; margin-top: 8px;">
<tr style="background: #f4f4f4;">
<th align="center">ID</th>
<th align="center">Song Name</th>
<th align="center">Album Name</th>
<th align="center">Label Name</th>
</tr>
#foreach (xxxxxxxxxxx ienctry in obmain)
{
<tr class="divset">
<td align="center">#ienctry.id</td>
<td align="center">#ienctry.Song</td>
<td align="center">#ienctry.Album</td>
<td align="center">#ienctry.Label</td>
</tr>
}
</table>
</div>
</div>
</div>
and my controller is this..
[HttpPost]
public ActionResult SearchForEdit(int entryid)
{
ViewBag.searchid = entryid;
return PartialView("SearchForEdit");
}
Here is my partial page...
#{
int ssid = 0;
if(ViewBag.searchid!=null)
{
ssid = ViewBag.searchid;
}
List<XXXXXXXX> mainobject = XXXXXXXXXXXXXXXXX.Service.Class1.SearchnUpdate(ssid);
ViewBag.Title = "title";
}
<div>
<table style="border-style: solid; border-width: thin; height: auto; width: 100%; margin-top: 8px;">
#if (mainobject.Count > 0)
{
<tr style="background: #f4f4f4;">
<th align="center">ID</th>
<th align="center">Song Name</th>
<th align="center">Album Name</th>
<th align="center">Label Name</th>
<th align="center"></th>
</tr>
foreach (XXXXXXXXXX ientry in mainobject)
{
<tr style="background: #f4f4f4;">
<td align="center">#ientry.id</td>
<td align="center">#ientry.Song</td>
<td align="center">#ientry.Album</td>
<td align="center">#ientry.Label</td>
<td align="right"><img src="../../Content/img/update.png"</td>
</tr>
}
}
</table>
</div>
Here is my method has been defined in class1 page..
public static List<xxxx> SearchnUpdate(int searchid)
{
string ssongname=searchid.ToString();
List<xxxx> obj = new List<xxxx>();
using (xxxxxxxxx dbcontext = new xxxxxxxxxx())
{
obj = (from z in dbcontext.xxxxx where z.id == searchid || z.Song == ssongname select z).ToList();
}
return obj;
}