.balloonstyle{
position: absolute;
top: -500px;
left: 100; 
padding: 5px;
visibility: hidden;
border:1px solid #66cc00;
font:normal 12px Verdana;
line-height: 18px;
z-index: 100;
background-color: black;
width: 200px;
color: #FFFFFF;
}

#arrowhead{
z-index: 99;
position:absolute;
top: -500px;
left: 0;
visibility: hidden;
}