function simple_popup(url, name, w, h) {
    my_simple_popup = open("" + url, name, "width=" + w + ",height=" + h +", scrollbars=yes, resizable=yes, status=no");
}

function positioned_popup(url, name, w, h) {
    my_simple_popup = open("" + url, name, "width=" + w + ",height=" + h +", screenX=300, screenY=240, left=300, top=240, scrollbars=yes, resizable=yes, status=no");
}