document.ready(function(){

  $("Home", "Tutors", "Students", "Subjects", "FAQ").invoke("hover", function(elem){
     if (elem.id === currPage){
        return;
     }
     if(!elem.overed){
        elem.src = elem.src.replace(".gif", "_over.gif");
        elem.overed = true;
     }
  }, function(elem){
     if (elem.id === currPage){
        return;
     }
     if(elem.overed){
        elem.src = elem.src.replace("_over.gif", ".gif");
        elem.overed = false;
     }
  });
  
  if (currPage !== false){
    $(currPage).src = $(currPage).src.replace(".gif", "_over.gif");
  }
  
});

function changeSelectedSubject(select){
       $('selected_subject').update(select.value);
}

function changeSelectedState(select){
       $('selected_state').update(select.value);
}

function changeSelectedEducationLevel(select){
       $('selected_educationLevel').update(select.value);
}