* Use bgiframe-plugin if available
* Use dimensions-plugin to calculate viewport
* Expose global blocked-property via $.Tooltip.blocked to programmatically disable all tooltips
* Fixed image maps in IE by setting the alt-attribute to an empty string
* Removed event-option (only hover-tooltips now)
* Simplified event-handling (using hover instead of mouseover und mouseout)
* Added another "pretty" example
* Added top and left options to specify tooltip offset
* Reworked example page: New layout, code examples