$(document).ready(function() {
    $("a[href^=http]").click(function(){
	//find the links pointing to a URL
	if(this.href.indexOf(location.hostname) == -1) {
	    //check if they point outside
	    window.open( $(this).attr('href') );
	    //force open the new window
	    return false;
	} else {
	    return true;
	}
    });
});