window.onload = externalLinks;

function externalLinks()
{
	var objCurrent, objReplacement;

	if (document.getElementsByTagName)
	{
		var objAnchors = document.getElementsByTagName('a');
		for (var iCounter=0; iCounter<objAnchors.length; iCounter++)
		{
			if (objAnchors[iCounter].getAttribute('href') &&objAnchors[iCounter].getAttribute('rel') == 'external')
			{
				objAnchors[iCounter].onclick = function(event){return launchWindow(this, event);}
				objAnchors[iCounter].onkeypress = function(event){return launchWindow(this, event);}

				if (document.replaceChild)
				{
					objCurrent = objAnchors[iCounter].firstChild;
					if (objCurrent.nodeType == 3) // Text node
					{
						objReplacement = document.createTextNode(objCurrent.data);
						objAnchors[iCounter].replaceChild(objReplacement, objCurrent);
					}
					else if (objCurrent.alt) // Current element is an image
					{
						objReplacement = objCurrent;
						objReplacement.alt = objCurrent.alt + ' (opens in a new window)';
						
						try{objAnchors[iCounter].replaceChild(objReplacement, objCurrent);}
						catch(e){}
					}
				}
			}
		}
	}
}





function launchWindow(objAnchor, objEvent)
{
	var iKeyCode;

	if (objEvent && objEvent.type == 'keypress')
	{
		if (objEvent.keyCode) iKeyCode = objEvent.keyCode;
		else if (objEvent.which) iKeyCode = objEvent.which;
		if (iKeyCode != 13 && iKeyCode != 32) return true;
	}

	return !window.open(objAnchor);
}