var oWin = null;

function openWindow(sUrl) {
    var iLeft = (screen.width) ? (screen.width - 760) / 2 : 0;
    var iTop = (screen.height) ? (screen.height - 400) / 2 : 0;
    var sParams = "height=400,width=760,top=" + iTop + ",left=" + iLeft + ",scrollbars=no,resize=no";
    oWin = window.open(sUrl, "winPixel", sParams);
    if (oWin.window.focus) {oWin.window.focus();}
}

function setLinkTargets() {
    if (top != self) {top.location.replace(self.location.href);}
    if (!document.getElementsByTagName) {return;}
    var aLinks = document.getElementsByTagName("a");
    for (var i = 0; i < aLinks.length; i++) {
        if (aLinks[i].getAttribute("rel") == "offsite") {aLinks[i].target = "_blank";}
        if (aLinks[i].getAttribute("rel") == "popup") {aLinks[i].onclick = function() {openWindow(this.href); return false;};}
    }
}

window.onload = setLinkTargets;