Dialog positioning
The dialog can easily be placed around an element. We go around clock-wise
To place a dialog each tour step-div has an option "pos" in its title tag
"pos" is a tripple defining the position like this:
ltb - left-top-bottom
1. Dialog position:
t(op), r(ight), b(ottom), l(eft)
2. Arrow position:
t(top), m(middle), b(ottom)
OR with dialog on top/bottom
l(left), c(enter), r(right)
3. Dialog alignment:
t(op), m(middle), b(ottom)
OR with dialog on top/bottom
l(left), c(enter), r(right)
