jQuery(document).ready(function(){
    try { document.execCommand("BackgroundImageCache", false, true); } 
    catch(err) {}
});
jQuery(document).ready(function(){
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i < anchors.length; i++)
    {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
            anchor.target = "_blank";
    }
});