var onLoadFunctions = new Array();

function addWindowOnLoadFunction(f)
{
	onLoadFunctions[onLoadFunctions.length] = f;
}

function windowOnLoad()
{
	for (var i = 0; i < onLoadFunctions.length; i++) onLoadFunctions[i]();
}

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") == "external") anchor.target = "_blank"; 
	} 
}

addWindowOnLoadFunction(externalLinks);

window.onload = windowOnLoad;