CLAMP laegrader report plugin with fixed headers and student columns

Features:

• scrolls horizontally and vertically while freezing the student columns and the grade item rows
• negates need for pages of students
• removes nested spans for handling categories and course category (along with the '+', '-' and 'o' buttons nobody seems able to find)
• operates under Firefox, Safari, Opera and IE7 & IE8 (no support for IE6)
• includes a "Copy to Excel" button for quick dumps of report contents (formatted as seen with item maxgrades)
• allows input of letter grades which are converted to numeric values based on letter-grade setup for course
• "editalways" user preference that displays grades editable but in their selected display type
• allows input of percentage values followed by %
• wrapped grade item titles
• tweaking to css to straighten out the table lines
• Range row (if turned on) frozen at the top, below the grade item names
• lang files are self-contained
• user-pref height of scrollable area