jQuery实现左右切换焦点图

演示图：

代码：

$(document).ready(function() {   
  greyInitRedux();
  ieDropdownsNav();
  ieDropdownsFilter();
  itemViewer();
  jsTabsetInit();
  slider();
  headerTabs();
  carousel();
  emergencyClose();
  replyLinks();
  adjournLinks();
  zebra_strip_rows();
  visitor_site_slideshow();
 });
 
var carousel_round = 0;
 
/*-------------------------------------------
  Grey Initial Values
-------------------------------------------*/
function greyInitRedux() {
  $("input.filled, textarea.filled").focus(function(e){
    if(this.value == this.defaultValue)
    {
      $(this).removeClass('filled');
       this.value= '';
    }
    $(this).blur(function(f){ 
      if(this.value == this.defaultValue) {
        $(this).addClass('filled');
        } else if(this.value == "") {
          this.value = this.defaultValue;
          $(this).addClass('filled');
        }
      });
  })
 
}
   
/*-------------------------------------------
  IE6 CSS Main Nav Dropdowns
-------------------------------------------*/
function ieDropdownsNav() {
  if(document.all&&document.getElementById) 
  {
    navRoot = document.getElementById('main-nav');
    if (!navRoot) { return false; }
     
    for(i=0; i<navRoot.childNodes.length; i++) 
    {
      node = navRoot.childNodes[i];
      if (node.nodeName=='LI') 
      {
        node.onmouseover=function() 
        {
          this.className+=' over';
        }
        node.onmouseout=function() 
        {
          this.className=this.className.replace(' over', '');
        }
      }
    }
  }
}
 
 
/*-------------------------------------------
  IE6 CSS Main Nav Dropdowns
-------------------------------------------*/
function ieDropdownsFilter() {
  if(document.all&&document.getElementById) 
  {
    navRoot = document.getElementById('filter-drop');
    if (!navRoot) { return false; }
     
    for(i=0; i<navRoot.childNodes.length; i++) 
    {
      node = navRoot.childNodes[i];
      if (node.nodeName=='DIV') 
      {
        node.onmouseover=function() 
        {
          this.className+=' over';
        }
        node.onmouseout=function() 
        {
          this.className=this.className.replace(' over', '');
        }
      }
    }
  }
}
   
 
 
 
/*-------------------------------------------
  View More
-------------------------------------------*/
function itemViewer() {
  //$(document).delegate('#filter-drop a, .expandable > .load, .filter-nav a', 'click', function (e)
  //$(document).delegate('.expandable > .load, .filter-nav a', 'click', function (e)
  $(document).delegate('.filter-nav a', 'click', function (e) 
  {
    // get the src for the content we're trying to view
    var dataSrc = $(this).attr('data-src');
     
    // determine whether we're trying to sort the existing view
    if($(this).attr('data-sort')) {
      var dataSort = $(this).attr('data-sort');
    } else {
      var dataSort = $('.filter-nav > li > a').attr('data-sort');
    }
 
    // how many items do we have?
    var itemOffset = $('.expandable .listing > li').size();
     
    //find out if we clicked the menu, if so, clear out everything and add data attribute to the load more
    if($(this).closest('div').hasClass("filter"))
    {
      var hiddenDiv = $('<div />', {
        "class": "items hidden spacer",
        "height": $('.expandable').outerHeight()
      });
      $('.expandable > .load').before(hiddenDiv);
       
      $('.expandable > ul, .expandable > div:not(.spacer)').remove();
      $('.load').attr('data-src',dataSrc);
   
      // Change Class of Dropdown Toggle
      var clickedClass = $(this).parent().attr('class');
      $("#filter-drop strong").removeClass().addClass(clickedClass);
   
      // Change Text of Dropdown Toggle
      var thisLabel = $(this).text();
      $("#filter-drop strong span").text(thisLabel);
       
      // Grab datasrc from clicked-on menu item and populate the filters with it
      $('.filter-nav a').attr('data-src' , dataSrc);
      $('.filter-nav li').removeClass('active');
      $('.filter-nav > li').eq(0).addClass('active');
    }
       
    //find out if we clicked the filter nav, if so let's switch the active class
    if($(this).closest('ul').hasClass("filter-nav")) {
      $('.filter-nav li').removeClass('active');
      $(this).parent().addClass('active');
       
      //Also let's remove all the items before replacing them with what we want
      var hiddenDiv = $('<div />', {
        "class": "items hidden spacer",
        "height": $('.expandable').outerHeight()
      });
      $('.expandable > .load').before(hiddenDiv);
       
      $('.expandable > ul, .expandable > div:not(.spacer)').remove();
    }
     
    $.get(dataSrc, { offset: itemOffset, sort: dataSort }, function(data) {
      $('.expandable .spacer').remove();
      var hiddenDiv = $('<div class="items hidden"></div>');
      $('.expandable > .load').before(hiddenDiv);
      $(hiddenDiv).append(data).hide().removeClass("hidden").fadeIn(); 
    });
     
    e.preventDefault();
  });
}
 
 
function jsTabsetInit() {
  var $tabset = $('.heading-tabset').eq(0);
   
  var $tablist = $('<ul />', {"class": "heading-tab"});
  $tabset.prepend($tablist);
   
  $('div.heading-tab h3').each(function()
  {
    var $anchor = $('<a />', {
      "class": $(this).attr('class'),
      "onClick": '_gaq.push([\'_trackEvent\', \'Connect\', \'Click\', \'Head'+$(this).attr('class')+'\', 3]);',
      "href": "#",
      "html": $(this).html()
    });
    var $li = $('<li />');
    $li.append($anchor);
    $tablist.append($li);
  });
   
  $('div.heading-tab').remove();
   
  $('.heading-tabset:gt(0)').each(function()
  {
    $tabset.append($(this).find('.listing'));
    $(this).remove();
  });
}
 
 
function slider() {
  $('.slider').each(function()
  {
    // As we loop through the slider items we'll document the tallest one and the left position
    // of each element
    var maxHeight = 0, lastWidth = 0;
     
    // grab the slider and make sure the overflow is hidden and it has a defined width
    var $slider = $(this);
    $slider.css('width', $slider.outerWidth());
    $slider.css('position', 'relative');
    $slider.css('overflow', 'hidden');
     
    // store the index (or the currently "selected" slide)
    $slider.prop('index', 0);
     
    // loop through each of the direct children
    $slider.find('> *').each(function()
    {
      // localize the child as a jQuery object
      var $li = $(this);
       
      // if this is the tallest child, document it
      if ($li.outerHeight() > maxHeight)
      {
        maxHeight = $li.outerHeight();
      }
       
      // position each child to the immediate right of its preceding sibling
      $li.css('position', 'absolute');
      $li.css('top', 0);
      $li.css('left', lastWidth);
       
      // update our maths so we know where to place the next sibling
      lastWidth+= $li.outerWidth();
    });
     
    // set the height of the slider based on the tallest child
    //$slider.css('height', maxHeight);
     
    // build the previous control button and store a reference to its related slider
    var $previous = $('<a />', {"class": "prev disabled", "href": "#", "text": "Previous"});
    $previous.prop('slider', $slider);
     
    // build the next control button and store a reference to its related slider
    var $next = $('<a />', {"class": "next", "href": "#", "text": "Next"});
    $next.prop('slider', $slider);
     
    // build the controls div and add it to the markup
    var $controls = $('<div />