/**
 * @author feiwen
 */
(function($){
	$.fn.textslider = function(settings){    
        settings = jquery.extend({
        	speed : "normal",
			line : 2,
			timer : 1000
    	}, settings);
		return this.each(function() {
			$.fn.textslider.scllor( $( this ), settings );
    	});
    }; 
	$.fn.textslider.scllor = function($this, settings){
		//alert($this.html());
		var ul = $( "ul:eq(0)", $this );
		var timerid;
		var li = ul.children();
		var _btnup=$(".up:eq(0)", $this)
		var _btndown=$(".down:eq(0)", $this)
		var lihight=$(li[0]).height();
		var upheight=0-settings.line*lihight;//婊氬姩鐨勯珮搴︼紱
		var scrollup=function(){
			_btnup.unbind("click",scrollup);
			ul.animate({margintop:upheight},settings.speed,function(){
				for(i=0;i<settings.line;i++){
                	 //$(li[i]).appendto(ul);
					 ul.find("li:first").appendto(ul);
					// alert(ul.html());
                }
               	ul.css({margintop:0});
                _btnup.bind("click",scrollup); //shawphy:缁戝畾鍚戜笂鎸夐挳鐨勭偣鍑讳簨浠?			});	
		};
		var scrolldown=function(){
			_btndown.unbind("click",scrolldown);
			ul.css({margintop:upheight});
			for(i=0;i<settings.line;i++){
				ul.find("li:last").prependto(ul);
            }
			ul.animate({margintop:0},settings.speed,function(){
                _btndown.bind("click",scrolldown); //shawphy:缁戝畾鍚戜笂鎸夐挳鐨勭偣鍑讳簨浠?			});	
		};
		var autoplay=function(){
			timerid = window.setinterval(scrollup,settings.timer);
			//alert(settings.timer);
		};
		var autostop = function(){
            window.clearinterval(timerid);
        };
		//浜嬩欢缁戝畾
		ul.hover(autostop,autoplay).mouseout();
		_btnup.css("cursor","pointer").click( scrollup );
		_btnup.hover(autostop,autoplay);
		_btndown.css("cursor","pointer").click( scrolldown );
		_btndown.hover(autostop,autoplay)
	};
})(jquery);