var _POPUP_FEATURES = 'location=0,statusbar=0,menubar=0,width=800,height=600';

listen('load', window, function() {
	mlisten('click', getElementsByClass('popup','a'), event_popup_features('location=0,statusbar=0,menubar=0,width=1024,height=681') );
	mlisten('click', getElementsByClass('popup2','a'), event_popup_features('location=0,statusbar=0,menubar=0,width=576,height=768') );
});

function raw_popup(url, target, features) {
    if (isUndefined(features)) features = _POPUP_FEATURES;
    if (isUndefined(target  )) target   = '_blank';
    var theWindow = window.open(url, target, features);
    theWindow.focus();
    return theWindow;
}

function link_popup(src, features) {
    return raw_popup(src.getAttribute('href'), src.getAttribute('target') || '_blank', features);
}

function event_popup_features(features) {
    return function(e) { link_popup(e.currentTarget, features); e.preventDefault() }
}