.adv {font:12px/14px Arial,Helvetica,sans-serif; border:solid 4px blue; width:250px; 
      padding:10px; position:absolute; z-index:200; visibility:hidden; color:#333333;
      top:0px; left:0px; background-color:#ffffff; layer-background-color:#ffffff;}
.mes {font:14px/16px Arial,Helvetica,sans-serif;   
      padding:20px; position:absolute; z-index:200; visibility:hidden; color:#333333;
      top:75px; left:0px; background-color:#99ccff; layer-background-color:#99ccff;}