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;

closeAll = function (){
var allDataLines = $$('.PSchars'); 
for (i=0; i < allDataLines.length; i++) allDataLines[i].style.display="none";
}

function changeAlpha(char){
closeAll();
var all2Show = $$('.PSchar' + char ); 
for (i=0; i < all2Show.length; i++) all2Show[i].style.display="block";

var allAlphas = $$('.alphaLinksSelected'); 
for (i=0; i < allAlphas.length; i++) allAlphas[i].className="alphaLinks";
$('alphaLink_' + char).className="alphaLinks alphaLinksSelected";
}