function printSwitch () {
var i=0;
if (document.styleSheets.length>0)
{
  cs=!document.styleSheets[0].disabled;
  for (i=0;i<document.styleSheets.length;i++)
    document.styleSheets[i].disabled=cs;
};
void(cs=true);
}

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;