If you have a page embeded in an iFrame and want to call it from parent, here's how:
[event] | Browser.ExecuteJavascript
"var iframe = document.getElementById(""myframe"");
if (iframe) {
var iframeContent = (iframe.contentWindow || iframe.contentDocument);
var doc = iframe.contentWindow.document;
// Your code here
}"[/code:1a2x6fsr]
You place your js code there inside, just as you would normally.
Also make sure your iFrame has an ID – in the upper example, the ID is "myframe".