jquery中使用ajax获取远程页面信息

<asp:GridView ID="GvCollect" runat="server" AutoGenerateColumns="False"
DataKeyNames="Id" onrowdeleting="GvCollect_RowDeleting"
EnableModelValidation="True">
<Columns>
<asp:BoundField DataField="Id" HeaderText="编号" />
<asp:TemplateField HeaderText="标题">
<ItemTemplate>
<span class="showCon" data='<%#Eval("Id")%>'><%# Eval("Title") %></span>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="AddTime" HeaderText="时间" />
<asp:TemplateField HeaderText="操作">
<ItemTemplate>
<a href="Show_Coll.aspx?id=<%# DataBinder.Eval(Container.DataItem,"Id") %>" target="_blank">查看</a>
<asp:LinkButton ID="Lbtn" runat="server" CommandName="delete" OnClientClick="return confirm('确定删除')">删除</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<table width="100%">
<tr>
<td>
<asp:Button ID="BtnAllMove" runat="server" Text="全部入库" onclick="BtnAllMove_Click" />
<asp:Button ID="BtnAllDelete" runat="server" Text="清空所有记录" onclick="BtnAllDelete_Click" />
</td>
<td>
&nbsp;</td>
</tr>
<tr>
<td>
&nbsp;</td>
<td>
&nbsp;</td>
</tr>
</table>

<link href="js/jquery-ui-1.8.16.custom.css" rel="stylesheet" type="text/css" />
<script src="js/jquery-1.4.1.min.js" type="text/javascript"></script>
<script src="js/jquery-ui-1.8.16.custom.min.js" type="text/javascript"></script>

<script type="text/javascript">
$(function () {
//初始化弹出层,加载是不显示
$("#divTip").dialog({
show: null,
width: 500,
height: 500,
bgiframe: false,
autoOpen: false,
buttons: {
"Ok": function () {
$(this).dialog("close");
},
"Cancel": function () {
$(this).dialog("close");
}
}
});
//取消对象自身的事件冒泡
$("#divTip").bind("click", function (event) {
event.stopPropagation();
});
//动态提示类弹出层，点击对象时弹出装载页面
$(".showCon").css("cursor", "pointer").click(function (event) {
$("*").stop();
$("#divTip").dialog("close");
event.stopPropagation();
var top = $(event.target).offset().top + 20;
var left = $(event.target).offset().left;
//取得对象源的id
var objId = $(event.target).attr("data");
// alert(objId);
$.ajax({
type: "POST",
url: "Show_Coll.aspx",
data: "id=" + objId,
success: function (con) {
$("#divTip").html(con);
}
});
// $("#divTip").html(objId);
$("#divTip").dialog("option", "position", [left, top]);
$("#divTip").dialog("open");
});
})
</script>

//Request.QueryString["id"] == null
if (Request["id"]==null)
return 0;
return Convert.ToInt32(Request["id"].ToString());