Pselus,
Here's exactly how I have a similar task running in my ASP.NET page, I use C#. Also, if you want to open a window then Sabrina Gage's window.open(...) does that so put that in your function or at the end of your page.
I used a two tier approach because I was using the main function not only from the onload of the page but also during another call. I also like putting the call at the bottom of the page because that helps to insure that the page is loaded by the time it tries to run the function. As it turned out on the aspx page there is no way to add a simple onload=, JavaScript? Or Jscript? Does not like it, it issues an error, even though it runs it just fine so I used two things to insure everything is fine before the function runs, 1. use window.onload = a function that calls the wanted function after a delay. The window.onload = a function had to be used in order to not cause the "Not implemented" error, the setTimeout was a little added insurance.
Another point, your page may re-load from time to time (when you do a post back, things like doing a database search, clicking a "View Details" button, all sorts of things) & that means that this "function" will run at those times as well. If that is NOT what you want then you'll need to write some code-behind to catch the times you do NOT want it to run your window function & tell it not to run at those times.
The way I do this is to set up a hidden var on the aspx page and in the code behind I change the value of the hidden field, then in the function that would open your window I would first check the value of that hidden field & do as directed.
First off, the method Sabrina used will work fine for the case where your aspx page has the HTML tags. So here are the assumptions I'm working under:
Assumption #1:
You want your function to run every time the page loads no matter what caused the page to load.
Assumption #2:
Your aspx page is using a MASTER page so there are NO HTML tags in the file. (Sabrina showed how to do this if your page does have HTML tags & that way should work just fine, at least it works fine in standard, non-aspx, HTML files.)
I used the following in a program of mine to test out the ideas when I needed them, here are the tests I did with comments about how they worked:
===============================================================================
<%@ Page Title="My Page" Language="C#" MasterPageFile="~/MyMasterPage.master" AutoEventWireup="true" CodeFile="MyPage.aspx.cs" Inherits="MyPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<script type="text/JavaScript">
// Works BUT gives error: "Not implimented"
window.onload = TestFunction("directly #1");
function TestFunction(FrmHere) {
alert("In TestFunction() from: " + FrmHere);
}
// Works as wanted, no errors
window.onload = function() { setTimeout('TestFunction();', 50); }
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolderMain" Runat="Server">
<!-- The <body> start here -->
<asp:Panel ID="panelMain" runat="server">
.
.
.
<script type="text/javascript">
// Run this function after every page load
// Works BUT gives error: "Not implimented"
window.onload = TestFunction("Bottom of page, directly #2");
// Works correctly, no errors
window.onload = function() { setTimeout('TestFunction("Bottom of page, another function.");', 50); }
</script>
</asp:Panel>
</asp:Content>
===============================================================================
so, either placing the call to your function in the top script tags or script tags at the bottom of the page works HOWEVER as noted simply using window.onload does not work smoothly (in either location) since it causes an error while in the debugger saying that it was "Not implemented" which is rather strange since it ran the function AOK & then it gave the error.
If your aspx page has the HTML & body tags then use the method explained by Sabrina, if you're using a MASTER page so that your aspx page does not have HTML & body tags then you can use my method.
Also, if you want the window to open every time the MASTER page is used, again you can place the call in the body tag as Sabrina showed.
One last point, which probably does not need to be said, use the call to the window opener funtion either at the top or the bottom but not both.
Here's a super simple way to do it at the end of your aspx page, the above more complex methods work as well & have their uses but here's the simplest I've tested that works:
.
.
.
<script type="text/javascript">
window.open("http://cs.yrex.com");
</script>
</asp:Content>
=======================================================
OR the same thing can be put at the top of the page inside the first Content section:
====================================================================
<%@ Page Title="Test Page" Language="C#" MasterPageFile="~/MyMaster.master" AutoEventWireup="true" CodeFile="MyPage.aspx.cs" Inherits="MyPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<script type="text/javascript">
window.open("http://cs.yrex.com");
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
====================================================================
That's about as simple as it can get, the script tags & one line!
Hope that helps.