HELP! how to open external links?

HELP! how to open external links?

Please!!!
I have a template with code blocks to external pages open in the same window, limiting at the scroll.
How to release, to open an external site link?




CODE IS THIS:

$(document).ready(function(){
    /* This code is executed after the DOM has been completely loaded */
   
    $('nav a,footer a.up').click(function(e){

                                         
        // If a link has been clicked, scroll the page to the link's hash target:
       
        $.scrollTo( this.hash || 0, 500);
        e.preventDefault();
    });

});


jQuery("document").ready(function($){
   
    var nav = $('.nav-total');
   
    $(window).scroll(function () {
        if ($(this).scrollTop() > 100) {
            nav.addClass("f-nav");
        } else {
            nav.removeClass("f-nav");
        }
    });
 
});