/*
* vertical news ticker
* Tadas Juozapaitis ( kasp3rito@gmail.com )
* http://www.jugbit.com/jquery-vticker-vertical-news-ticker/
*/
(function($){
  $.fn.vTicker = function(options) {
    var defaults = {
      speed: 700,
      pause: 4000,
      showItems: 2,
      animation: '',
      mousePause: true,
      isPaused: false,
      direction: 'up',
      height: 0
    };
    
    var options = $.extend(defaults, options);
    
    moveUp = function(obj2, height, options){
      if(options.isPaused)
        return;
          
          var obj = obj2.children('ul');
      
      var clone = obj.children('li:first').clone(true);
      
      if(options.height > 0)
      {
        height = obj.children('li:first').height();
      }    
      
      obj.animate({top: '-=' + height + 'px'}, options.speed, function() {
        $(this).children('li:first').remove();
        $(this).css('top', '0px');
      });
      
      if(options.animation == 'fade')
      {
        obj.children('li:first').fadeOut(options.speed);
        if(options.height == 0)
        {
          obj.children('li:eq(' + options.showItems + ')').hide().fadeIn(options.speed).show();
        }
      }
      
      clone.appendTo(obj);
    };
    
    moveDown = function(obj2, height, options){
      if(options.isPaused)
        return;
          
          var obj = obj2.children('ul');
      
      var clone = obj.children('li:last').clone(true);
      
      if(options.height > 0)
      {
        height = obj.children('li:first').height();
      }
      
      obj.css('top', '-' + height + 'px')
        .prepend(clone);
      
      obj.animate({top: 0}, options.speed, function() {
        $(this).children('li:last').remove();
      });
      
      if(options.animation == 'fade')
      {
        if(options.height == 0)
        {
          obj.children('li:eq(' + options.showItems + ')').fadeOut(options.speed);
        }
        obj.children('li:first').hide().fadeIn(options.speed).show();
      }
    };
    
    return this.each(function() {
      var obj = $(this);
      var maxHeight = 0;
      
      obj.css({overflow: 'hidden', position: 'relative'})
        .children('ul').css({position: 'absolute', margin: 40, padding: 0})
        .children('li').css({margin: 0, padding: 0});
      
      if(options.height == 0)
      {
        obj.children('ul').children('li').each(function(){
          if($(this).height() > maxHeight)
          {
            maxHeight = $(this).height();
          }
        });
        
        obj.children('ul').children('li').each(function(){
          $(this).height(maxHeight);
        });
        
        obj.height(maxHeight * options.showItems);
      }
      else
      {
        obj.height(options.height);
      }
      
      var interval = setInterval(function(){ 
        if(options.direction == 'up')
        { 
          moveUp(obj, maxHeight, options); 
        }
        else
        { 
          moveDown(obj, maxHeight, options); 
        } 
      }, options.pause);
      
      if(options.mousePause)
      {
        obj.bind("mouseenter",function(){
          options.isPaused = true;
        }).bind("mouseleave",function(){
          options.isPaused = false;
        });
      }
    });
  };
})(jQuery);