Forcing postback through an update panel

I have a web form (asp.net front, c# back) which has two pages. The first page is a dashboard of sorts which provides the user with a queue of records drawn from the database. I have a "next" button which automatically goes to the next record in the queue, and launches a new window with certain variables in it to configure the second page.

Problem is, I recently modified the dashboard page to use update panels, and partial postbacks, so that the page isnt reloading everytime someone changes a setting or what have you.

So the script that actually launches the new window is triggered via javascript on the loading of the page window. Since this page is now in an update panel, I believe when the next button is hit, the next record is "loaded" and the URL for the new window launch is available, but the javascript that launches the windows isnt firing, because technically the page isnt reloading.

Can someone help me figure out a solution to this?

Here is the javascript at the beginning of the page:

function window_onload() {

        if (window.name != "WTMAIN") {
            window.open("main.aspx", "WTMAIN", "", false);
            window.open("", "_self", "", false);
            window.opener = top;
            window.close();
        }
        window.top;
        window.moveTo(0, 0);
        window.resizeTo(screen.width, screen.height);

        if (form1["HFUrl"].value.length > 0) {
            window.open(form1["HFUrl"].value, "CRM", "", false);
            form1["HFUrl"].value = "";
        }
    }

Once the next button is pushed, the "HFUrl" (simply a hidden field which tells the app WHICH page to launch) is populated with the page and the variables needed. Before the update panel was put in, it would reload the page and launch the window.

One way I KNOW would fix this, would be to remove the overall update panel on the form, and replace it with separate update panels around all the different elements that need them, and this would leave certain other elements that DONT need them (like the next button) automatically posting back the page like they used to.... I'm trying to avoid doing this if possible.

Thanks!
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rajeeshmcaConnect With a Mentor Commented:
Hi,

U could instead use triggers with update panel....

<asp:UpdatePanel ID="updatePnl" runat="server" UpdateMode=Conditional>
            <ContentTemplate>
             
                <asp:GridView ID="gridViewPersons" runat="server"
                AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333"
                GridLines="None" Width="460px">
                </asp:GridView>
               <asp:button ID ="triggerbutton" runat="server" Text="Trigger" />
                   
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="triggerbutton" />
            </Triggers>

        </asp:UpdatePanel>
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kolakanuru1Commented:
Did you try calling window_onload function in the clientclick event of the next button?
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