function tweetChenger(){
						   
	var IE6 = (navigator.userAgent.indexOf("MSIE 6")>=0) ? true : false;

	var $twitter_update_list = $("#twitter_update_list > li");
	var availableClass = 'on';
	
	var first_tweet = $twitter_update_list.get(0);
	$(first_tweet).addClass(availableClass).show();
	
	function set_position(){
		var screen_width = document.documentElement.clientWidth;
		var screen_height = document.documentElement.clientHeight;
		var pos_top = screen_height - 200 - 30;
		
		var limit_height = 420;
		
		if(pos_top < limit_height){
			pos_top = limit_height;
		}
		
		$('#bottom-contents').css({
			top : pos_top
		});
	}
	
	$(window).resize(function(){
		set_position();
	});
	
	$(window).scroll(function(){
		set_position();
	});
	
	set_position();

	var tweetAnimation = setInterval(function(){
		
		$twitter_update_list.each(function(index,elm){
			var $thisElm = $(elm);
			var length = $twitter_update_list.length;
			
			if( index == length-1 ){
				var $nextElm = $($twitter_update_list[0]);
			}else{
				var $nextElm = $($twitter_update_list[index+1]);
			}
			
			if( $thisElm.hasClass(availableClass) ){
				if(!IE6){
					$thisElm.fadeOut().removeClass(availableClass);
					$nextElm.fadeIn().addClass(availableClass);
				}else{
					$thisElm.removeClass('on');
					$nextElm.addClass('on');

				}

				return false;
			}
		});
			
	}, 5000);


}

	
	
function twitterCallback(twitters) {
  var statusHTML = [];
  for (var i=0; i<twitters.length; i++){
    //var username = twitters[i].user.screen_name;
    var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) {
      return '<a href="'+url+'">'+url+'</a>';
    }).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
      return  reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'">'+reply.substring(1)+'</a>';
    });
    statusHTML.push('<li><span>'+relative_date(twitters[i].created_at)+'</span>'+status+'</li>');
  }
  document.getElementById('twitter_update_list').innerHTML = statusHTML.join('');
  tweetChenger();
}


function relative_date(time_value) {
	var values = time_value.split(" ");
	time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
	var parsed_date = Date.parse(time_value);

	var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
	var delta = parseInt(parsed_date / 1000) - (relative_to.getTimezoneOffset() * 60);
	var dateObj = new Date(delta*1000);
	var ie = /*@cc_on!@*/false;
	if(ie){
		var year = dateObj.getYear();
	}else{
		var year = dateObj.getYear()+1900;
	}
	var result = year+'.'+(dateObj.getMonth()+1)+'.'+dateObj.getDate();
	return result;
}