added touch mode; some changes

added touch abilities and some other changes
added converter cache

added converter cache and new dev mode
minor fixes

some minor fixes; added clearCache function
using requestAnimationFrame instead of mousemove event

using requestAnimationFrame and some other pixes
improved pixel/percent converter

improved pixel/percent converter. Now there are more functions instead
of a large object.
fixes self triggered mousedown events

fixes self triggered mousedown events
removed arrow click event

removed arrow click event; you can use arrowDeselect instead
minor fixes

saving the container id into a variable.
fixed offset error

fixed an error with offsetTop and -Left. Now using jQuery .offset()