javascript - How to avoid "The operation is insecure" error when accesing opened window -

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i'm trying open new window , fill data ready copyed in clipboard, printed or saved hard drive. i'm doing through greasemonkey user script.

simplified version of script:

window.addeventlistener("load", function() {    /*export data*/   //create button   var button = document.createelement("input");   //call actual export function    button.onclick = function() {window.exportujrozvrh();};   //i tried this:     //button.onclick = (function() {window.exportujrozvrh();}).bind(window);    button.value = "print data in new tab";   button.type = "button";    //append button node   getelementbyxpath(tisk_path).appendchild(button); });      window.exportujrozvrh = function() {       //create new tab (or window if tab not supported)       var okno = window.open(); //no url should fine same origin policy, shouldn't it?       //check if popup exists       if(okno==null)         alert("popup blocked.");       //write data       okno.document.open();       okno.document.write("data");        okno.document.close();    }

if run button function throws following error:

securityerror: operation insecure.

however, if function lauhced debug console or url bar (by typping javascript: window.exportujrozvrh();void(0))1) script works properly.
guess it's context function launched in matters. why trying use .bind(window).

1) calling throws "window not defined" error. i'm quite used fact window defined, gave up.


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