var marquee={
	obj:".marquee",
	init:function(opt,callback){
		if(typeof(opt)=='object'){
		for(var o in opt)
			marquee[o]=opt[o];
		}
		$(marquee.obj).each(function(){
			var obj=this;
			var end=$(this).attr("rel"); /*每次滚动的li条数*/
			end=$.trim(end)==""?1:end;
			function auto(){
				$(obj).find("ul").animate({top:-60},100,function(){
					$(this).css("top",0).children("li").slice(0,end).appendTo($(this));
				});	
			}
			var timeout=setInterval(auto,4000);
			$(obj).hover(function(){
			  clearInterval(timeout);
			},function(){
				timeout=setInterval(auto,4000);
			});
		});
		if(typeof(callback)=='function'){
			callback.call();
		}
	}
}

	
$(function(){
	marquee.init();
});