.balloonstyle{
position:absolute;
top: -500px;
left: 0;
padding: 5px;
visibility: hidden;
font:normal 12px Verdana;
line-height: 18px;
z-index: 100;
/*Remove below line to remove shadow. Below line should always appear last within this CSS*/
filter: progid:DXImageTransform.Microsoft.Shadow(color=gray,direction=135,Strength=5);
 background-image:url(bubble.png); 
 background-repeat:no-repeat; 
 width:400px; 
 height:300px;
}

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