function externalLinks() {
 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";
 }
} 


function openWindow(path, name, width, height) {

    var winl = (screen.width - width) / 2;
    var wint = (screen.height - height) / 2;

    style = eval("'status=no,width="+width+",height="+height+",left="+winl+",top="+wint+",resizable=yes,menubar=no,scrollbars=yes,toolbar=no'");
    window.open(path, name, style) ;
}