function externalLinks() {
	if (!document.getElementsByTagName) return;
 	
	var allAnchors = document.getElementsByTagName("a");
 	var allAnchorsLength = allAnchors.length;
	
	for (var i=0; i<allAnchorsLength; i++) {
   		var anchor = allAnchors[i];
  		
		if (anchor.getAttribute("rel") == "external"){
     		anchor.setAttribute("target","_blank");
 		}
		else if (anchor.getAttribute("rel") == "popup"){
     		url = anchor.getAttribute("href");
			//anchor.setAttribute("href","#");
			features="scrollbars,titlebar,width=420,height=300";
			anchor.onclick=function(){window.open(this.getAttribute("href"),"newWin",features);return false;};
			//anchor.setAttribute("href",'javascript:window.open(url,"newWin",features);');
 		}
	}
}

addLoadEvent(externalLinks);