[cyber]

а ну я понял, попробуйте так

function Focus_and_Blur(opt){
      
      var elem = opt.elem, focusForElem;
        
       var body = document.body;
        
       body.setAttribute('tabindex',-1); 
      
      if (elem.addEventListener){ 
      
      elem.addEventListener('focus' , onFocus,true);
      
      body.addEventListener('focus',onDocumentFocus,true); 
    
      } else {
      
      elem.onfocusin = onFocus;
      body.onfocusin = onDocumentFocus;
    
      }
      
      function onFocus(e) {
      
        focusForElem = true;
        event.cancelBubble = true;
        opt.focus.call(this,e);
      }
      
        function onDocumentFocus (e) {
        
          if (focusForElem) {
            focusForElem = false;
            opt.blur.call(elem,e)
          }
        }
      
      };