Using jQuery to hide divs; this isn't working at all for me.

Using jQuery to hide divs; this isn't working at all for me.

Well, this is my first post and my first impass with jQuery. So far I have been able to figure everything else out myself, but this has perplexed me.

I have a website that I am trying to keep minimal and I am relying on jQuery to change the content in a div that represents the content of the site.

so I have this that makes up the menu system.
  2. $(document).ready(function(){
  3.  
  4. $("ul.subnav").parent().append("<span></span>"); //Only shows drop down trigger when js is enabled - Adds empty span tag after ul.subnav
  6. $("ul.topnav li a").hover(function() { //When trigger is clicked...
  8. //Following events are applied to the subnav itself (moving subnav up and down)
  9. $(this).parent().find("ul.subnav").slideDown('fast').show(); //Drop down the subnav on click
  10.  
  11. $(this).parent().hover(function() {
  12. }, function(){
  13. $(this).parent().find("ul.subnav").slideUp('slow'); //When the mouse hovers out of the subnav, move it back up
  14. });
  15.  
  16. //Following events are applied to the trigger (Hover events for the trigger)
  17. }).hover(function() { 
  18. $(this).addClass("subhover"); //On hover over, add class "subhover"
  19. }, function(){ //On Hover Out
  20. $(this).removeClass("subhover"); //On hover out, remove class "subhover"
  21. })(this).hover(function() {
  22. $("ul.topnav li span").addClass("subhover");
  24. });
  26. });
Then I have all the page's CSS. etc... A little father down I have a section that I have a particular div in that I want to be able to change; particularly this one. (mylogop)
  2. <div class="content">
  3.     <div id="mylogop">
  4.         FooBar Foo Bar Foo Content will be here somday
  5.         </div>
so I have this code as well to do that.
  2. <script type="text/javascript">
  3. $("#mylogos").click(function() {
  4. $("#mylogop").replaceAll(FoobarContentHere);
  5. });

  7. </script>
It's made so when I click a menu item it switches the HTML with the page appropriate material, but when I click it nothing happens. So maybe there is somthing I am missing, but I am stumped so...Please help! 

Thanks, 
A.Scales