var old = (window.onload) ? window.onload : function () {};
window.onload = function ()
{
	old();
	if (!document.getElementById) return;

	//add listener to "external" class a hrefs
	for(var i = 0; i < document.links.length; i++)
	{
		if(document.links[i].className == 'external')
		{
			document.links[i].onclick = newWindow;
		}		
	}
}

function newWindow()
{
	newWindow = window.open(this,"","")
	return false;
}