Fixed a bug and updated/added some properties

- fixed a bug where if the "reposition_speed" property was > 0 and the
browser window was manually resized, the animations for repositioning
the window would queue up and slow down the process to almost a complete
halt;
- changed the name of the "animaton_speed" property to
"animation_speed_hide" and added a new "animation_speed_show" used to
set the speed by which the dialog box will fade in when appearing;
Updated version number to 1.3.2