.tip {font:10px/12px Arial,Helvetica,sans-serif; border:solid 1px #666666; width:10px; 
      padding:1px; position:absolute; z-index:100; visibility:hidden; color:#333333;
      top:0px; left:0px; background-color:#ffffcc; layer-background-color:#ffffcc;}
.tip2 { border:solid 0px #666666; width:250px; 
      padding:1px; position:absolute; z-index:10; visibility:hidden; color:#333333;
      top: -20px; left:10px; }
.tip3 { border:solid 0px #666666; width:250px; 
      padding:1px; position:absolute; z-index:220; visibility:hidden; color:#333333;
      top: 0px; left:0px; }