function popup(){
  if(!document.getElementById||!document.createTextNode){return;}
  var post_header = $("#post_header");
  var post_location = $("#post_location");
  var loc = post_location.text();  
  if(!post_header || !post_location || !loc){return}
  post_header.bind('click',function(){
    window.open( loc, "Preview_viwdow","status = 1, resizable = 1, statusbar = 1, scrollbars = 1" )
    return false;
  })
}
$(document).ready(function(){
  popup()
})