problem with sliding sub-menu

problem with sliding sub-menu

Hi i have problem with my menus...

when i click the menus, then sub menu will be dropdown...

but i want to change it  to mouse over . not click~

what do i have to change it ?

Plz help T_T

---------------------------------------------

this is the jquery source ...

  jQuery(function($){
        // Frequently Asked Question
        var li = $('.menu>.li');
        li.addClass('off');
        $('.menu .on').find('.depth2Wrap').show();
        //li.eq(0).removeClass('off');
        //li.eq(0).find('.a').show();
        $('.menu>.li div.bottomBg>a').click(function(){
        var myArticle = $(this).parents('.li:first');
        if(myArticle.hasClass('off')){
        li.addClass('off').removeClass('on');
        li.find('.depth2Wrap').slideUp(100);
        myArticle.removeClass('off').addClass('on');
        myArticle.find('.depth2Wrap').slideDown(100);
        li.removeClass('fir_sele');
        } else {
        myArticle.removeClass('on').addClass('off');
        myArticle.find('.depth2Wrap').slideUp(100);
        li.removeClass('fir_sele');
        }
        return false;
        });
        });





















----------------------------------------------------

This is HTML

<ul class="menu">
<li class="li"><a class="depth1" href="#">MENU1</a></li>
<li class="li"><a class="depth1" href="#">MENU2</a></li>
<li class="li">
<a class="depth1" href="#">MENU3</a>
<div class="depth2Wrap">
<ul class="depth2">
<li class=""><a href="#">SUB-MENU1</a></li>
<li class=""><a href="#">SUB-MENU2</a></li>
</ul>
</div>
</li>
<li class="li">
<a class="depth1" href="#">MENU4</a>
<div class="depth2Wrap">
<ul class="depth2">
<li class="on"><a href="#">SUB-MENU1</a></li>
<li class=""><a href="#">SUB-MENU2</a></li>
</ul>
</div>
</li>
</ul>




















 

--------------------------------------------

this is CSS

 

 

.menu {width:100%;  border-bottom:1px solid #60738a;}
.menu .depth2Wrap {display:none;  overflow:hidden;}
.menu .depth1 {color:#fff; display:block;    height:40px;    overflow:hidden; }
.menu .depth1 span { display:block;  padding:3px 0 0 10px;  }
.menu .depth1 em { padding:0 0 0 10px; ;}
.menu .on .depth1 {  color:#84bcf1;  font-weight:bold; }
.menu .on .depth1 span {color:#b9ddff ; font-weight:normal}
.menu .bottomBg { border-bottom:1px solid #28476c;  }
.menu li.on {  background:url(../images/common/bg_menu_top.gif) no-repeat top; }  







.menu .depth1:hover {color:#84bcf1;   }
.menu .depth1:hover span {color:#b9ddff ; font-weight:normal }

.depth2 {padding:2px 0;}
.depth2 li a {color:#84bcf1; font-weight:bold; padding:6px 0; display:block; padding-left:40px; ;}
.depth2 .on a,  .d2 li a:hover {  color:#bddb1a;}