Here's a screenshot:

They're really faint, and on some monitors they almost fade entirely to white. But they're there. You can see the arrow buttons in the lower-right corner of this image.
Is it something in the skin?
html {
min-height: 100%;
margin-bottom: 1px;
}
html { overflow: auto; } //lets the scollbars vanish completely if they're not needed because the content fits into the window
body { overflow: hidden; } //this switches off the scollbars for the body tag - the html object takes care of too much content for the window
html { padding: 0px; }
body { margin: 0px; }