vegeta1k95's ModernSpellBook ported to Wrath of the Lich King 3.3.5a with the following enhancements/changes/additions:

• IMPORTANT: Due to the way WotLK protects the spellbook frame during combat, it was necessary to hide the addon's modified spellbook when combat starts and prevent it from being opened during combat. This was the only way to prevent tainting. Aside from this, the addon works just as well as the vanilla version.
• Spell/talent level requirements are listed as green if the character's level meets the requirement.
• Paginated upcoming spells frame to avoid them from clipping into spell school titles.
• Profession tab is on its own page now.
• All profession passives, spells and specializations are listed under the profession tab.
• Button to resize the spellbook added on the lower right.
• Option to lock the position and scale of the spellbook.
• Clique support.
• Cooldowns support.
• WhatsTraining-WotLK & What's Training? Epoch support.