Kind window.unload popup

kind.js

/**
 * This won't work in newer FF versions as it doesn't handle onbeforeunload properly.
 * Need another browser oriented hack...
 */
window.onbeforeunload = function (e) {
    var newwindow;

    e = e || window.event;

    newwindow=window.open('http://www.google.com','cool-popup','height=800,width=800');
    newwindow.focus();

    if (e)
    {
        e.returnValue = 'Would you like to open our super-cool popup?';
    }
    
    return 'Would you like to open our super-cool popup?';
};