Scroll i IFRAME

Har en side med IFRAME, men der er ingen scroll i min IFRAME. Kan scroll med musen men ikke andet... hjælp. Hvad mangler jeg???

www.exp.kbang.dk

CSS:

body {
  font-family: Verdana, Tahoma, Arial, Helvetica, Sans-serif;
  font-size: 13px;
  background-color: white;
  color: black;
}
#banner {
  z-index:1;
  position: absolute;
  left: 0px;
  top: 0px;
  height: 50px;
  width: 100%;
  margin: 0px;
  background-color: #386A51;
  color: white;
}
#left {
  z-index:2;
  position: absolute;
  top: 50px;
  left: 0px;
  background-color: #386A51;
  color: black;
  height: 100%;
  background-image: url("greenline.bmp");
  background-repeat:repeat-y;
  background-attachment: fixed;
}
#submenu {
  z-index:3;
  position: absolute;
  top: 50px;
  left: 121px;
  right: 0px;
  height: 25px;
  overflow: auto;
  border: 0px solid black;
  padding: 4px;
  background-color: #FAF4F4;
  background-image: url("bg.bmp");
}
#menu {
  z-index:6;
  position: absolute;
  top: 50px;
  left: 121px;
  right: 0px;
  height: 25px;
  overflow: auto;
  border: 0px solid black;
  padding: 4px;
  background-color: #FAF4F4;
  background-image: url("bg.bmp");
}
#content {
  z-index:4;
  position: relative;
  top: 75px;
  left: 60px;
  right: 0px;
  height: 90%;
  width: 100%;
  overflow: auto;
  border: 0px solid black;
  padding: 0px;
  background-color: #FFF;
}
#main {
  z-index:5
  frameborder: 0;
  height: 100%;
  width: 100%
}