jQuery底部弹出缩略图导航菜单，点击底部菜单栏文字会弹出一列缩略图，点击缩略图跳转到对应链接。jquery缩略图底部弹出导航菜单
<script type="text/javascript">
$(function(){
/* function to make the thumbs menu scrollable */
function buildThumbs($elem){
var $wrapper = $elem.next();
var $menu = $wrapper.find('.sc_menu');
var inactiveMargin = 150;
/* move the scroll down to the
beggining (move as much as the height of the menu) */
$wrapper.scrollTop($menu.outerHeight());
/* when moving the mouse up or down, the wrapper moves (scrolls) up or down */
$wrapper.bind('mousemove',function(e){
var wrapperHeight = $wrapper.height();
var menuHeight = $menu.outerHeight() + 2 * inactiveMargin;
var top = (e.pageY - $wrapper.offset().top) * (menuHeight - wrapperHeight) / wrapperHeight - inactiveMargin;
$wrapper.scrollTop(top+10);
});
}
var stacktime;
$('#menu li > a').bind('mouseover',function () {
var $this = $(this);
buildThumbs($this);
var pos = $this.next().find('a').size();
var f = function(){
if(pos==0) clearTimeout(stacktime);
$this.next().find('a:nth-child('+pos+')').css('visibility','visible');
--pos;
};
/* each thumb will appear with a delay */
stacktime = setInterval(f , 50);
});
/* on mouseleave of the whole <li> the scrollable area is hidden */
$('#menu li').bind('mouseleave',function () {
var $this = $(this);
clearTimeout(stacktime);
$this.find('.sc_menu').css('visibility','hidden').find('a').css('visibility','hidden');
$this.find('.sc_menu_wrapper').css('visibility','hidden');
});
/* when hovering a thumb, change its opacity */
$('.sc_menu a').hover(
function () {
var $this = $(this);
$this.find('img')
.stop()
.animate({'opacity':'1.0'},400);
},
function () {
var $this = $(this);
$this.find('img')
.stop()
.animate({'opacity':'0.3'},400);
}
);
});
</script>