prevent opening another the same tab in browser

Vote count:

0

Let's say I have main.php and page1.html on my www apache server. Part of main.php:

 ...
 <script> 
   function openNewTab(){
   var win=window.open('page1.html', '_blank');
       win.focus();
   };
 </script>
 ... 
 <?php
  echo  "<p><a href='' onclick='openNewTab(); return false;'>start</a></p>";
 ?>

When I click link above, I have opened two tabs: main.php and page1.html. And my aim is to prevent user opening another tab with page1.html, when he press link on main.php. Or , when user click link on main.php, tab with page1.html should be refreshed, but new tab shouldn't be opened.

thanks in advance.

asked 1 min ago

maciekm

156