function ext() {
	
	var hostname = window.location.hostname;
	
	hostname = hostname.replace("www.", "").toLowerCase();
	
	var tags = new Array('a', 'area');
	
	for(itags in tags) {
	
		var a = document.getElementsByTagName(tags[itags]);
	
		for(i in a) {		
				
			if(href = a[i].href) {
			
				if((href.indexOf("http://") != -1 && href.indexOf(hostname) == -1) || a[i].rel == 'ext') {
						
					a[i].target = "_blank";
						
				}
			
			}
				
		}	

	
	}


}