In the line that includes <!-- in the <script> element, all the characters that follows <!-- are removed. You should write only <!-- in a line, or should not use <!-- comment --> in the <script> tag.
A URL or a long word protrudes from the side of the sprite frame. URLs/long words are dealt with differently by browsers:
(1) Internet Explorer 6
A URL or a long word is cut on the edge. The right silde of the frame is also cut. If you would like to pay attention to Internet Explorer 6 user, set the width of the sprite wider than the width of including URL.
(3) Internet Explorer 7, Firefox, Safari
A URL or a long word protrudes from the side of the sprite frame.
Detailed Browser Compatibility
Internet Explorer 6, 7
A line feed code is converted to a space code when a super sprite is saved by using Simple Editor.
Font size cannot be scaled below the minimum font size (9 pt). If you prefer linear zooming, set the minimum font size to the smallest by using utility software like SafariStand.