var externalLinks =
{
	updateLinks: function(){
		var hostname = window.location.hostname;
		hostname = hostname.replace('www.','').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';
		};
		for (var i=0;i<a.length;i++){
			if(check(a[i])) set(a[i]);
		};
	},
	init: function(func){	
		var oldonload = window.onload;
		if (typeof window.onload != 'function'){
	    	window.onload = func;
		} else {
			window.onload = function(){
			oldonload();
			func();
			}
		}
	}
}
externalLinks.init(externalLinks.updateLinks);