//显示收缩窗口
function showwin(){
   var windNode = $('#win'); //找出节点
   //方法一：
   //windNode.css("display","block");
   //方法二：
   //windNode.show('slow')
   //淡入方式：
   //windNode.fadeIn('slow');
    windNode.slideDown('slow');
}
function hiedwin(){
    var windNode = $('#win');
    windNode.slideUp('slow');
}