$(document).ready(function(){
	var onAuto = 0;
	var maxHeight = 550;
	var list = $("#weiboUl li")
	var boxHeight = 0;
	var showLi = 0;
	for(i=0;i<list.length;i++){
		boxHeight += list[i].offsetHeight;
	    showLi = i;
		if( boxHeight > maxHeight){
			boxHeight -= list[i].offsetHeight;
			i = list.length;
		}
	}
	$("#weiboUl").hover(function(){
		onAuto = 1;
	},function(){
		onAuto = 0;
	})
	$("#weiboUl").css("height",boxHeight+"px");
	var scrollAuto = setInterval(function(){
		if(onAuto == 0){
			scrollText();
		}
	},6000);
	
	function scrollText(){
		boxHeight += list[list.length-1].offsetHeight;
		var j = 0;
		while( boxHeight > maxHeight ){
			j++;
			boxHeight -= list[showLi - j].offsetHeight;
		}
		showLi = showLi - j + 1;
		$("#weiboUl").animate({height: boxHeight},1000);
		var nextInner = "<li>"+$(list[list.length-1]).html()+"</li>";
		$(list[list.length-1]).remove();
		$(list[0]).before(nextInner);
		list = $("#weiboUl li");
		$(list[0]).hide().css( "visibility","hidden").slideDown(1000,function(){$(list[0]).css( "visibility","").hide().fadeIn(1000);});
		
	}
})