Click and drag the above link to your personal tool bar or, create a blank bookmark and add the following to the location field:
javascript:q=document.getSelection();if(!q){void(q=prompt('Enter text to search the ITYT Airport Code database.',''))};if(q)location.href='http://www.ityt.com/misc/airport_codes.php?limit=200&searchquery='+escape(q)Here's what it will look like: