You may use something like following

<!-- HTML -->

<a id=opener>Open window</a>



// JavaScript

var a = document.getElementById('opener'), w;        

a.onclick = function() {

  if (!w || w.closed) {

    w = window.open(https://www.google.com,_blank,menubar = 0, scrollbars = 0);

  } else {

    console.log('window is already opened');

  }

  w.focus();

};

Working jsBin | More on window.open method

If you want to control more than one window, use the snippet below

<!-- HTML -->

<a href=https://www.google.com class=opener>Open google.com</a> | 

<a href=http://www.yahoo.com class=opener>Open yahoo.com</a> 



//JavaScript

window.onload = function(){

  var a = document.querySelectorAll('.opener'), w = [], url, random, i;

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

    (function(i){

      a[i].onclick = function(e) {

        if (!w[i] || w[i].closed) {

          url = this.href;

          random = Math.floor((Math.random() * 100) + 1); 

          w[i] = window.open(url, _blank, random, menubar = 0, scrollbars = 0);

        } else {

          console.log('window ' + url + ' is already opened');

        }

        e.preventDefault();

        w[i].focus();

      };

    })(i);

  }

};

Working jsBin

If you don't want them to load in separated window, just exclude this line

random = Math.floor((Math.random()*100)+1);

and remove random reference from the next line

w[i] = window.open(url, _blank, random, menubar=0,scrollbars=0);

Side note: As you can see above, we created two windows with some third party content; you should know that there's no way to get any reference (to the parent/opener window) from them.