| <style> | |
| #headernavbar { | |
| position: fixed; | |
| } | |
| #system { | |
| position: absolute; | |
| visibility: hidden; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="headernavbar"> | |
| <div> | |
| <div>There should be text below</div> | |
| <div id="system"> | |
| This should be visible | |
| </div> | |
| </div> | |
| </div> | |
| <script> | |
| document.body.offsetWidth; | |
| system.style.visibility='visible'; | |
| </script> |