鼠标移到控制点显示缩略图的jquery相册源码，兼容IE6

特效介绍

鼠标移到控制点显示缩略图的jquery相册源码，兼容IE6。里面用到了一些css3效果，可能在IE8以下浏览器显示效果不如火狐等好看。建议升级您的IE浏览器或者换成别的内核的浏览器以达到更好的体验效果。

使用方法

1、在头部引入如下代码：

<link rel="stylesheet" type="text/css" href="css/style.css" />
<script type="text/javascript" src="http://www.5imoban.net/download/jquery/jquery-1.8.3.min.js"></script>

2、把以下代码拷贝到你想引用的地方

<div id="ps_container" class="ps_container">
    <div class="ps_image_wrapper">
     <!-- First initial image -->
     <img src="images/1.jpg" alt="" />
    </div>
    <!-- Navigation items -->
    <div class="ps_next"></div>
    <div class="ps_prev"></div>
    <!-- Dot list with thumbnail preview -->
    <ul class="ps_nav">
     <li class="selected"><a href="images/1.jpg" rel="images/thumbs/1.jpg">Image 1</a></li>
     <li><a href="images/2.jpg" rel="images/thumbs/2.jpg">Image 2</a></li>
     <li><a href="images/3.jpg" rel="images/thumbs/3.jpg">Image 3</a></li>
     <li><a href="images/4.jpg" rel="images/thumbs/4.jpg">Image 4</a></li>
     <li><a href="images/5.jpg" rel="images/thumbs/5.jpg">Image 5</a></li>
     <li><a href="images/6.jpg" rel="images/thumbs/6.jpg">Image 6</a></li>
     <li><a href="images/7.jpg" rel="images/thumbs/7.jpg">Image 7</a></li>
     <li><a href="images/8.jpg" rel="images/thumbs/8.jpg">Image 8</a></li>
     <li><a href="images/9.jpg" rel="images/thumbs/9.jpg">Image 9</a></li>
     <li><a href="images/10.jpg" rel="images/thumbs/10.jpg">Image 10</a></li>
     <li class="ps_preview">
      <div class="ps_preview_wrapper">
       <!-- Thumbnail comes here -->
      </div>
      <!-- Little triangle -->
      <span></span>
     </li>
    </ul>
   </div>
   
  </div>
  <!-- The JavaScript -->
        <script type="text/javascript">
   /*
   the images preload plugin
   */
   (function($) {
    $.fn.preload = function(options) {
     var opts  = $.extend({}, $.fn.preload.defaults, options),
      o  = $.meta ? $.extend({}, opts, this.data()) : opts;
     return this.each(function() {
      var $e = $(this),
       t = $e.attr('rel'),
       i = $e.attr('href'),
       l = 0;
      $('<img/>').load(function(i){
       ++l;
       if(l==2) o.onComplete();
      }).attr('src',i); 
      $('<img/>').load(function(i){
       ++l;
       if(l==2) o.onComplete();
      }).attr('src',t); 
     });
    };
    $.fn.preload.defaults = {
     onComplete : function(){return false;}
    };
   })(jQuery);
  </script>
        <script type="text/javascript">
   $(function() {
    //some elements..
    var $ps_container  = $('#ps_container'),
     $ps_image_wrapper  = $ps_container.find('.ps_image_wrapper'),
     $ps_next   = $ps_container.find('.ps_next'),
     $ps_prev   = $ps_container.find('.ps_prev'),
     $ps_nav    = $ps_container.find('.ps_nav'),
     $tooltip   = $ps_container.find('.ps_preview'),
     $ps_preview_wrapper = $tooltip.find('.ps_preview_wrapper'),
     $links    = $ps_nav.children('li').not($tooltip),
     total_images  = $links.length,
     currentHovered  = -1,
     current    = 0,
     $loader    = $('#loader');
    
    /*check if you are using a browser*/ 
    var ie     = false;
    if ($.browser.msie) {
     ie = true;//you are not!Anyway let's give it a try
    }
    if(!ie)
     $tooltip.css({
      opacity : 0
     }).show();
     
     
    /*first preload images (thumbs and large images)*/
    var loaded = 0;
    $links.each(function(i){
     var $link  = $(this);
     $link.find('a').preload({
      onComplete : function(){
       ++loaded;
       if(loaded == total_images){
        //all images preloaded,
        //show ps_container and initialize events
        $loader.hide();
        $ps_container.show();
        //when mouse enters the pages (the dots),
        //show the tooltip,
        //when mouse leaves hide the tooltip,
        //clicking on one will display the respective image 
        $links.bind('mouseenter',showTooltip)
           .bind('mouseleave',hideTooltip)
           .bind('click',showImage);
        //navigate through the images
        $ps_next.bind('click',nextImage);
        $ps_prev.bind('click',prevImage);
       }
      }
     });
    });
    
    function showTooltip(){
     var $link   = $(this),
      idx    = $link.index(),
      linkOuterWidth = $link.outerWidth(),
      //this holds the left value for the next position
      //of the tooltip
      left   = parseFloat(idx * linkOuterWidth) - $tooltip.width()/2 + linkOuterWidth/2,
      //the thumb image source
      $thumb   = $link.find('a').attr('rel'),
      imageLeft;
     
     //if we are not hovering the current one
     if(currentHovered != idx){
      //check if we will animate left->right or right->left
      if(currentHovered != -1){
       if(currentHovered < idx){
        imageLeft = 75;
       }
       else{
        imageLeft = -75;
       }
      }
      currentHovered = idx;
      
      //the next thumb image to be shown in the tooltip
      var $newImage = $('<img/>').css('left','0px')
               .attr('src',$thumb);
      
      //if theres more than 1 image 
      //(if we would move the mouse too fast it would probably happen)
      //then remove the oldest one (:last)
      if($ps_preview_wrapper.children().length > 1)
       $ps_preview_wrapper.children(':last').remove();
      
      //prepend the new image
      $ps_preview_wrapper.prepend($newImage);
      
      var $tooltip_imgs  = $ps_preview_wrapper.children(),
       tooltip_imgs_count = $tooltip_imgs.length;
       
      //if theres 2 images on the tooltip
      //animate the current one out, and the new one in
      if(tooltip_imgs_count > 1){
       $tooltip_imgs.eq(tooltip_imgs_count-1)
           .stop()
           .animate({
           left:-imageLeft+'px'
            },150,function(){
            //remove the old one
            $(this).remove();
            });
       $tooltip_imgs.eq(0)
           .css('left',imageLeft + 'px')
           .stop()
           .animate({
           left:'0px'
            },150);
      }
     }
     //if we are not using a "browser", we just show the tooltip,
     //otherwise we fade it
     //
     if(ie)
      $tooltip.css('left',left + 'px').show();
     else
     $tooltip.stop()
       .animate({
        left  : left + 'px',
        opacity  : 1
       },150);
    }
    
    function hideTooltip(){
     //hide / fade out the tooltip
     if(ie)
      $tooltip.hide();
     else
     $tooltip.stop()
          .animate({
        opacity  : 0
       },150);
    }
    
    function showImage(e){
     var $link    = $(this),
      idx     = $link.index(),
      $image    = $link.find('a').attr('href'),
      $currentImage   = $ps_image_wrapper.find('img'),
      currentImageWidth = $currentImage.width();
     
     //if we click the current one return
     if(current == idx) return false;
     
     //add class selected to the current page / dot
     $links.eq(current).removeClass('selected');
     $link.addClass('selected');
     
     //the new image element
     var $newImage = $('<img/>').css('left',currentImageWidth + 'px')
              .attr('src',$image);
     
     //if the wrapper has more than one image, remove oldest
     if($ps_image_wrapper.children().length > 1)
      $ps_image_wrapper.children(':last').remove();
     
     //prepend the new image
     $ps_image_wrapper.prepend($newImage);
     
     //the new image width. 
     //This will be the new width of the ps_image_wrapper
     var newImageWidth = $newImage.width();
    
     //check animation direction
     if(current > idx){
      $newImage.css('left',-newImageWidth + 'px');
      currentImageWidth = -newImageWidth;
     } 
     current = idx;
     //animate the new width of the ps_image_wrapper 
     //(same like new image width)
     $ps_image_wrapper.stop().animate({
         width : newImageWidth + 'px'
     },350);
     //animate the new image in
     $newImage.stop().animate({
         left : '0px'
     },350);
     //animate the old image out
     $currentImage.stop().animate({
         left : -currentImageWidth + 'px'
     },350);
    
     e.preventDefault();
    }    
    
    function nextImage(){
     if(current < total_images){
      $links.eq(current+1).trigger('click');
     }
    }
    function prevImage(){
     if(current > 0){
      $links.eq(current-1).trigger('click');
     }
    }
   });
        </script>