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";  
 }  
}  
window.onload = externalLinks;

//jquery open new window
var windowSizeArray = [ "width=200,height=200,scrollbars=yes","width=450,height=500,scrollbars=yes","width=300,height=400,scrollbars=yes", "width=500,height=400,scrollbars=yes"];
 
	$(document).ready(function(){
		$('.newWindow').click(function (event){
 
			var url = $(this).attr("href");
            var windowName = "popUp";//$(this).attr("name");
            var windowSize = windowSizeArray[ $(this).attr("rel") ];
 
            window.open(url, windowName, windowSize).focus();
 
            event.preventDefault();
	});
});