The left click handler causes the current HTML page to be changed. The button references are just examples. The handler names are formed from the ID of the appropriate object, followed by an underscore, followed by the event name. The bottom of the object aligns with the baseline of surrounding text. The object is centered between left and right margins.
Subsequent text starts on the next line after the object.
The object aligns with the left margin, and subsequent text wraps along the right side of the object. The object aligns with the right margin, and subsequent text wraps along the left side of the object. The bottom of the object aligns with the bottom of surrounding text. The top of the object aligns with the top of surrounding text. The syntax of the url depends on the object.