function externalLinks() {
 s = '';
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
//   s = s + '\n\r'+anchor.getAttribute("href");
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
// alert (s);
}
window.onload = externalLinks;

function checkusername(username){
if(username.length>100){
	return false}
	else return true;
}