#map{
   position: absolute;
/* This doesn't work with IE8 so have to use 100% for width and height
                but does work with Firefox
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
*/
   margin: 0px;
   cursor: pointer;

   width: 100%;
   height: 100%;

   border: 1px solid black;
   z-index: 1;
}