1、弹出新页面，置顶
 
父页面：

Button：
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="openDia();return false;" />
 
JavaScript:

<script type="text/javascript">
function openDia() {
var returned = window.showModalDialog("UserList.aspx?" + (new Date()), window);
if (returned) {
document.getElementById("ret").innerHTML = returned;
}
else {
document.getElementById("ret").innerHTML = "";
}
}
</script>

子页面：
 

<asp:Button ID="Button1" runat="server" OnClientClick="getSelected();return false;" Text="Button" />
 

<script type="text/javascript">

function getSelected() {

var data = [];

ch = document.getElementsByName("t")

for (i = 0; i < ch.length; i++) {

if (ch[i].checked) {

data.push(ch[i].value);

}

}

window.returnValue = data.toString();

window.close();

}

</script>

2、弹出一个置顶的新页面，新页面关闭后刷新父页面
 

<a href="javascript:showModalDialog('UserList.aspx');window.location.reload()">aaaaa</a>
 

3、刷新父页面
 
window.location.reload()
 

4、

 
function update(obj) {
 
var ddl_sys = document.getElementById("ddl_system");
 
var sysValue = ddl_sys.options[ddl_sys.selectedIndex].value;
 
var ddl_modules = document.getElementById("ddl_modules");
 
var modulesValue = ddl_modules.options[ddl_modules.selectedIndex].value;
 
window.showModalDialog('PageAdd.aspx?isAdd=0&SystemID=' + sysValue + '&ModulesID=' + modulesValue + '&ID=' + obj, null, 'dialogHeight:600px;dialogWidth:650px;status:0;help:0 ');
 
}