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") == "img" || anchor.getAttribute("rel") == "ext"))
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;

function clearUsername()
{
	var un = document.getElementById('uname');
	if(un.value == 'Username')
		un.value = '';
}
function resetUsername()
{
	var un = document.getElementById('uname');
	if(un.value == '')
		un.value = 'Username';
}
function clearPassword()
{
	var pwd = document.getElementById('upass');
	if(pwd.value == 'password')
		pwd.value = '';
}
function resetPassword()
{
	var pwd = document.getElementById('upass');
	if(pwd.value == '')
		pwd.value = 'password';
}