javascript - bug in content warning page -


i'm helping friend little debugging site, i'm not familiar php though use help.

if (has_nav_menu('header menu')) {     ht_header_menu_wp_nav(); // header menu }else{     echo '<nav id="header-menu">';     echo '<ul>';     ht_no_wp_nav_notice();     echo '</ul>';     echo '</nav>'; }  ht_top_social_media(); ht_top_search_from();  $url=$_server['http_referer'];  $server=$_server['http_referer']; $str=strstr($url,'www.sample.com'); if($str==""){ ?> <script> $( document ).ready(function() {   $("#popup").show();   $("#warningpop").show(); }); </script> <?php  } 

it's code content warning page, meaning in first time enter page: popup , warningpop shown, second time when press enter button http_refer should address of site , not show popup , warningpop. thing when press enter see popup , warningpop can't access content of site. tell me why? :)


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