Can i modify HTML DOM of an external URL loaded using window.open?

Suppose i have a page at : www.mydomain.com

when the user clicks on a button, it opens a n开发者_StackOverflow社区ew window using :

newWin = window.open("https://www.otherdomain.com","a","height=800,width=1000");

Now, i want to modify some fields on the page. Specifically, the new window displays a form and i want to be able to autofill the form using the details the user entered on mydomain.com

Is this possible ?

If yes, then that beings me to another question :

Using jQuery, how do i invoke the ready() eventhandler for the newly loaded page ?

EDIT: So, as most guys pointed out here. Its the same origin policy. Can i do it using any other way. Like display the other page in frames ?

you dont really have much control over the new pages DOM since it is on another domain,

what you do have control over is when u close it:

so lets say u want to close it in 1 minute, on the main window u can do now:

setTimout(function(){newWin.close()},60000)

but otherwise i dont belive there is much you can do aside from sending javascript calls to the new window by doing:

newWin.open('javascript:alert("Hello");');

Well there are a couple of ways :-?

newWin = window.open("https://www.otherdomain.com","a","height=800,width=1000");
$(newWin).ready(function(){
    alert('New page has '+newWin.document.forms.length+' forms.');
});