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";
		}
	} 
} 

window.onload = externalLinks;
var preloopcount = 0;

function preloop()
{
	externalLinks();
	preloopcount = preloopcount + 1;
	var code = "preloop()";

	if(preloopcount < 100)
	{
		setTimeout(code,300);
	}
}

preloop();