function fix_external_links() { 
    if (!document.getElementsByTagName) return; 
    var anchors = document.getElementsByTagName("a"); 
    for (var i = 0; i < anchors.length; i++) { 
        var anchor = anchors[i]; 
        if (anchor.getAttribute("rel") && anchor.getAttribute("rel") == "external") { 
            anchor.target = "_blank"; 
        }  
    } 
} 
window.onload = fix_external_links;