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;

function displayWindow(url,width,height) {
 
  x = (640 - width)/2, y = (480 - height)/2;
  
  nWidth = width;
  nHeight = height;
  
  if (screen) {
  	y = ((screen.availHeight - height)/2)-93;
  	x = ((screen.availWidth - width)/2)-390;
  }
  
  if (screen.availWidth > 640) {
  	
  	x = ((screen.availWidth/2) - width)/2;
      
  }
  
  	window.open(url,'newWin','scrollBars=no,width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x);
  
  }
  
  function displayWindow2(url,width,height) {
                  
  x = (640 - width)/2, y = (480 - height)/2;
  
  nWidth = width;
  nHeight = height;
  
  if (screen) {
  	y = ((screen.availHeight - height)/2)-93;
  	x = ((screen.availWidth - width)/2)-390;
  }
  
  if (screen.availWidth > 640) {
  	
  	x = ((screen.availWidth/2) - width)/2;
      
  }
  
  	window.open(url,'newWin','scrollBars=yes,width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x);

}