this.blankwin = function(){

	var hostname = window.location.hostname;

	hostname = hostname.replace("btrails.","").toLowerCase();

	var a = document.getElementsByTagName("a");	

	this.check = function(obj){

		var href = obj.href.toLowerCase();

		return (href.indexOf("http://")!=-1 && href.indexOf(hostname)==-1) ? true : false;				

	};

	this.set = function(obj){

		obj.target = "_blank";

		obj.className = "external";

	};	

	for (var i=0;i<a.length;i++){

		if(check(a[i])) set(a[i]);

	};		

};







// script initiates on page load. 



this.addEvent = function(obj,type,fn){

	if(obj.attachEvent){

		obj['e'+type+fn] = fn;

		obj[type+fn] = function(){obj['e'+type+fn](window.event );}

		obj.attachEvent('on'+type, obj[type+fn]);

	} else {

		obj.addEventListener(type,fn,false);

	};

};

addEvent(window,"load",blankwin);