$(document).ready(function() {  
   // All links in main menu div
   var menu_links = $('div[class=menu] a');
   // On mouse hover
   menu_links.hover(
	  // In: Store and remove title
	  function() {  
		 old_title = $(this).attr('title');      
		 $(this).attr('title',''); 
	  },
	  // Out: Replace title
	  function() {  
		 $(this).attr('title', old_title);  
	  }  
   );  
});