Decker Code

added structure type variables which do not get copied into the structure instances

pixelwidth, pixelheight
if these contain functions and the width / height isn't explicitely defined, they get called by the hardcoded pixelwidth/pixelheight function

expandable
this used to get copied into each structure instance. now it is kept solely in the structure type

updated the scrollbar images
added horizontal scrollbars

moved the interface script code from the decker ruleset to the global engine ruleset

scrollbar works

getStackTrace() hardcoded function added

function calls in all mouse events can now see all enclosing displayed structures

still working on the @ operator. it now works for colors