/*
 *
 * Copyright (c) 2006/2007 Sam Collett (http://www.texotela.co.uk)
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * Version 2.0
 * Demo: http://www.texotela.co.uk/code/jquery/newsticker/
 *
 * $LastChangedDate: 2007-05-29 11:31:36 +0100 (Tue, 29 May 2007) $
 * $Rev: 2005 $
 *
 */
 
(function($) {
/*
 * A basic news ticker.
 *
 * @name     newsticker (or newsTicker)
 * @param    delay      Delay (in milliseconds) between iterations. Default 4 seconds (4000ms)
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $("#news").newsticker(); // or $("#news").newsTicker(5000);
 *
 */
$.fn.newsTicker = $.fn.newsticker = function(delay)
{
	delay = delay || 4000;
	initTicker = function(el)
	{
		stopTicker(el);
		el.items = $("li", el);
        
        // parse the quotes
        h = 0;
        el.items.each(function(i) {
          if($(this).height() > h)
            h = $(this).height();
          str = $(this).text().split("-");
          if(str.length > 2)
            $(this).html(str[0]+"<br /><b>- "+str[1]+"</b>");
        });
        $("#quote-top").height(h+30);
        $("#quote").css('visibility', 'visible');

        // hide all items (except first one)
		el.items.not(":eq(0)").hide().end();
		// current item
		el.currentitem = 0;
		startTicker(el);
	};
	startTicker = function(el)
	{
		el.tickfn = setInterval(function() { doTick(el) }, delay)
	};
	stopTicker = function(el)
	{
		clearInterval(el.tickfn);
	};
	pauseTicker = function(el)
	{
		el.pause = true;
	};
	resumeTicker = function(el)
	{
		el.pause = false;
	};
	doTick = function(el)
	{
		// don't run if paused
		if(el.pause) return;
		// pause until animation has finished
		el.pause = true;
		// hide current item
        // no fade if it's IE
        if(jQuery.browser.msie) {
          $(el.items[el.currentitem]).hide();
          el.currentitem = ++el.currentitem % (el.items.size());
          $(el.items[el.currentitem]).show();
          el.pause = false;
        } else {
          $(el.items[el.currentitem]).fadeOut("slow",
              function()
              {
                  $(this).hide();
                  // move to next item and show
                  el.currentitem = ++el.currentitem % (el.items.size());
                  $(el.items[el.currentitem]).fadeIn("slow",
                      function()
                      {
                          el.pause = false;
                      }
                  );
              }
          );
        }
	};
	this.each(
		function()
		{
			if(this.nodeName.toLowerCase()!= "ul") return;
			initTicker(this);
		}
	)
	.addClass("newsticker")
	.hover(
		function()
		{
			// pause if hovered over
			pauseTicker(this);
		},
		function()
		{
			// resume when not hovered over
			resumeTicker(this);
		}
	);
	return this;
};

})(jQuery);