function dayoo_showpic(options){
    var options = {
        move_id      : dojo.byId(options.move_id),
		move_tab     : options.move_tab || "li",
		bn1          : dojo.byId(options.bn1),
		bn2          : dojo.byId(options.bn2),
		class_able   : options.class_able || "",
		class_disable: options.class_disable || "",
		total_dis    : options.total_dis,
		move_num     : options.move_num || 1,
		time         : options.play_time
	}

	if(!options.move_id || !options.bn1 || !options.bn2) return false;
	var tab = options.move_id.getElementsByTagName(options.move_tab);
	if(!tab[0]) return false;
    options.bn1.status = false;
	options.bn2.status = false;
	var can_move = true;
	var move_dis = options.move_num * tab[0].clientHeight;
	var len = tab.length;
	var total_x = tab[0].clientHeight * len;
	if(total_x <= options.total_dis){
	    options.bn1.className = options.class_disable;
		options.bn2.className = options.class_disable;
		can_move = false;
		return false;
	}else{
	    options.bn2.className = options.class_able;
		options.move_id.style.height = tab[0].clientHeight * len + "px";
		options.bn2.status = true;
		var parent = options.move_id.parentNode;
		dojo.style(parent, 'position', 'relative');
		dojo.style(options.move_id, 'position', 'absolute');
	};

    dojo.connect(options.bn1, 'click', function(e){
	    if(!can_move) return false;
        var top = dojo.style(options.move_id, 'top');
		if(options.bn1.status){
            can_move = false;
            dojo.animateProperty({
			    node: options.move_id,
				properties:{
			        top: {start: top, end: top + move_dis, unit:"px"}
				},
				duration: options.time
			}).play();
			window.setTimeout(function(){
			    can_move = true;
				options.bn2.status = true;
				options.bn2.className = options.class_able;
			}, options.time);
		}else{
            return false;
			dojo.stopEvent(e);
		}

		if(top + move_dis >= 0){
            options.bn1.status = false;
			options.bn1.className = options.class_disable;
		}
		return false;
		dojo.stopEvent(e);
	});

	dojo.connect(options.bn2, 'click', function(e){
	    if(!can_move) return false;
        var top = dojo.style(options.move_id, 'top');
		if(options.bn2.status){
            can_move = false;
            dojo.animateProperty({
			    node: options.move_id,
				properties:{
			        top: {start: top, end: top - move_dis, unit:"px"}
				},
				duration: options.time
			}).play();
			window.setTimeout(function(){
			    can_move = true;
				options.bn1.status = true;
				options.bn1.className = options.class_able;
			}, options.time);

		}else{
            return false;
			dojo.stopEvent(e);
		}

		if(top - move_dis <= options.total_dis - total_x){
            options.bn2.status = false;
			options.bn2.className = options.class_disable;
		}
		return false;
		dojo.stopEvent(e);

	});

};

dayoo_showpic({
    //移动的总元素id
    move_id      : "slideContent",
	//需要获取的元素
	move_tab     : "li",
	//按钮一
	bn1          : "s1",
	//按钮二
	bn2          : "s2",
	//按钮类名(可移动)
	class_able   : "showpic_move",
	//按钮类名(不可移动)
	class_disable: "",
	//总窗口的长度
	total_dis: 1056,
	//移动个数
	move_num : 1,
	//动画时间
	play_time: 800
});