openWYSIWYG-Editor disappears on postback

It is working properly every time the page loads at the first time. However when we do a Postback the editor disappears with just the textarea. The postback is happening due to a dropdown on the page.

<asp:TextBox runat="server" ID="TBClosingInstructions" TextMode="MultiLine" Rows="8" Columns="40" TabIndex="2" Font-Name="Verdana"></asp:TextBox><script language="JavaScript">generate_wysiwyg('TBClosingInstructions');</script>

I would like the editor to remain even after postback. I have tried the following code

if (Page.IsPostBack)
            {
                this.ClientScript.RegisterStartupScript(this.GetType(), 开发者_高级运维"script", "<script language=\"JavaScript\">generate_wysiwyg('TBClosingInstructions');</script>", true);
                Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "ClientScript", "<script language=\"JavaScript\">generate_wysiwyg('TBClosingInstructions');</script>", true);
            }

Tried both registerStartupScript and registerClientScriptBlock individually to bind the javascript functions in every postback. But this doesn't work.

Is there any alternative? Please suggest.

There are a couple of methods that attach the editor to a textarea.

WYSIWYG.attach('all', mysettings);

This is what I was using which worked well if you content/form was not loaded dynamically.

Looking at the source code it attaches to the load event. This is probably why it isn't being attached.

WYSIWYG_Core.addEvent(window, "load", function generateEditor() { WYSIWYG._generate(id, settings); });

WYSIWYG.attachAll(mySettings);

I found this one works (all textareas), again looking at the source code it looks for every textarea in the DOM and does not attach to an event.

var areas = document.getElementsByTagName("textarea");
for (var i = 0; i < areas.length; i++) {
    var id = areas[i].getAttribute("id");
    if (id == null || id == "") continue;
    this.setSettings(id, settings);
    WYSIWYG_Core.includeCSS(this.config[id].CSSFile);
    WYSIWYG._generate(id, settings);
}