var r1  = new RegExp ("external(=(\S+))?","i"),
r2  = new RegExp ("^_+(\S+)$", "i"),
r3  = new RegExp ("^(blank|self|parent|top)$", "i"),
f1  = function ()
{
if (document.getElementsByTagName)
{
var anchors = document.getElementsByTagName ('a'),
affix   = 0,
count   = anchors.length,
anchor, target, t;
while (count > affix)
if ((anchor = anchors [affix ++]).getAttribute ('href') || anchor.href)
if (r1.test (anchor.getAttribute ('rel') || anchor.rel || ""))
(target = (target = RegExp.$2)
? (r2.test (target)
? (r3.test (t = RegExp.$1)
? "_" + t
: t)
: target)
: "_brank"),
((anchor.setAttribute)
? anchor.setAttribute ("target", target)
: (anchor.target = target));
}
};
if (window.addEventListener)window.addEventListener ('load', f1, false);
else if (window.attachEvent)window.attachEvent ('onload', f1);
else
window.onload = function (orig_windowonload)
{
return function ()
{
f1 ();
if (orig_windowonload)
orig_windowonload.apply (this, arguments);
};
} (window.onload);