/**
 * öffnet ein Popup
 *
 * @param string $content
 * @param string $title
 * @param string §contentParams optional
 * @access public
 */
function popUp(content, title, contentParams)
{
    if(contentParams != null)
    {
        popup = window.open(content, title, contentParams);
    }
    else
    {
        popup = window.open(content, title, "width=600, height=500, status=yes, scrollbars=yes, resizable=yes");
    }
    popup.focus();
    
    if(popup) 
    {
        return false;
    }
    else
    {
        return true;
    }
}