Add code to parent from iframe?

[lxndr]

As a newbie in terms of javscript coding I'm really struggling to work out if the following is possible:


What I want to be able to do from within an iframe is:


check if

parent.window.document.getElementById("autoloadpop") is null


I guess that would be:

if (parent.window.document.getElementById('autoload') == null) { etc



but then I want to add:

<a href='popup.php' id='autoloadpop' onclick="return hs.htmlExpand(this, { contentId: 'popup', objectType: 'iframe', width: 620, maxHeight: 400} )"></a>

to an existing div with the id 'main-header' in the parent page.


and then make the following call:

parent.window.document.getElementById('autoloadpop').onclick();



Any help would be greatly appreciated.

[Fang]

parent.document.getElementById("autoloadpop")