Hi Alberto,
this falls into the realm of css positioning - there's a lot of stuff on this via google, and it's a complex subject.
But you should be able to play around with the following; (I haven't tried this recently).
The style for the graphic is bdiv;
.bdiv {
position: absolute;
background-color: transparent;
top: 1em;
left: 1em%;
width: 32px;
height: 32px;
visibility: hidden;
}
by adjusting the top, and left parameters, you can move the graphic around.
The problem is that the position is "common" to all pages, so you have to find a place that is comfortable,
regardless of the page underneath.
It may be possible to make it page-dependent, which would give you more control, but also, of course, add to the work-load.
Cheers
Bruce