Automatic external link open in New Window

gistfile1.txt

 $('a').each(function() {  
    var a = new RegExp('/' + [removed].host + '/');  
    if(!a.test(this.href)) {  
    $(this).click(function(event) {  
    event.preventDefault();  
    event.stopPropagation();  
    window.open(this.href, '_blank');  
    });  
    }  
    });