循环显示切换

//列表显示
            function openP(_id)
                {
                   var select_id = parseInt(_id.replace("month",""));
                   for (i=1;i<=4;i++)
                   {
                      if (i==select_id)
                      {
                          document.getElementById("month"+i).style.display = "block";
                      }
                      else
                      {
                         document.getElementById("month"+i).style.display = "none";
                      }
                   }
                }

调用方法：

<a href="javaScript: ;" onmouseover="openP('month1')"></a>
                    <a href="javaScript: ;" onmouseover="openP('month2')"></a>
                    <a href="javaScript: ;" onmouseover="openP('month3')"></a>
                    <a href="javaScript: ;" onmouseover="openP('month4')"></a>