if(document.getElementById("twitter")!==undefined){var twitter=new Twitter({duration:750,wrapper:"#twitter",list:"#twitter ul"});twitter.init()}function Twitter(params){var _counter=0;var _btnPrev=_btnNext=null;var _list=$(params.list);var _entries=_list.children();var _nbEntries=_entries.length;var _scroll=_list.children().eq(0).outerHeight(true);var init=function(){_list.scrollTop(0).css({height:(_scroll*2)+"px",overflow:"hidden"}).append('<li class="last">&nbsp;</li>');_entries.eq(1).css("opacity","0.25");_createBtn();_btnNext.css("visibility","hidden")};var _createBtn=function(){var btn=new Array("prev","next");for(var i=0;i<btn.length;i++){eval("_btn"+btn[i].substr(0,1).toUpperCase()+btn[i].substring(1)+"=$('<span/>').attr('id', 'twitter-list-"+btn[i]+"').html('&nbsp;').bind('click',{direction:"+i+"},_move).appendTo('"+params.wrapper+"');")}};var _move=function(e){var direction=e.data.direction;if(_counter<0){_counter=0}if(!direction){_entries.eq((_counter+1)).animate({opacity:"1"},(params.duration/3)*2)}eval((direction?"--":"++")+"_counter");_entries.eq((_counter+1)).animate({opacity:"0.25"},(params.duration/3)*2);if(_counter==_nbEntries){_counter=-1;_entries.eq(1).css("opacity","0.25")}_list.stop(true,false).animate({scrollTop:_counter*(_scroll+1)+"px"},params.duration,null,function(){if(direction){_entries.eq((_counter-1)).css("opacity","1")}if(_counter>0&&_btnNext.css("visibility")=="hidden"){_btnNext.css("visibility","visible")}else{if(_counter<=0&&_btnNext.css("visibility")=="visible"){_btnNext.css("visibility","hidden")}}})};return{init:init}};