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";
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external nofollow")
     anchor.target = "_blank";
 }
}
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}
function bookmarkthis() {
var title = document.title;
var url = window.location;
if (window.sidebar) { // Firefox
	window.sidebar.addPanel(title, url,"");
} else if( window.external ) { // IE
	window.external.AddFavorite(url, title); }
else if(window.opera && window.print) { // Opera
return true; }
} 
addLoadEvent(function() {
  externalLinks();
  if (document.getElementById("prevCom")) {
  commentPreview();
}
});