var XHTMLCompatibility = {};

XHTMLCompatibility.insertExternalLinks = function()
{
    var arrAnchors = document.getElementsByTagName("a");

    for (var nIndex = 0; nIndex < arrAnchors.length; nIndex++)
    {
        if (arrAnchors[nIndex].getAttribute("href") && arrAnchors[nIndex].getAttribute("rel") == "external")
        {
            arrAnchors[nIndex].target = "_blank";
        }
    }
}