[jQuery] Changing the SRC of an iframe

[CodingCyborg]

I currently have this function set up:

function link(win,url){
        if(url){
                $(win+' > iframe').attr("src",url);
        }
        setFocus(win);
}

And I don't get any errors in the console.
win is a div that contains an iframe hence the child selector.
I've tried a few different things but o no prevail...
Help is appreciated :)