This small addon calculates the hitpoints healed with a prayer of healing and displays the number in a small, draggable window. It adds up the missing HP of each group member (players and pets), but doesn't count more than 1000 per unit. This number is customizable, according to the +healing and rank you use.
An Example:
You (the priest) have a deficit of 1700 HP (ouch)
the hunter in your group misses 500 HP
Then the addon displays "1500". 1000 from you, 500 from the hunter.

If the amount of HP healed exceeds a threshold (3000 by default, customizable), the text will turn green to inform you that casting a PoH will be very mana efficient now.

If someone in the group is more than 28m away, PoHM will display the sum of the missing HP of these out-of-range people in brackets behind the actual HP healed.

Slash commands: /pohmonitor or /pohm
"/pohm maxhp 1000" will set the maximum amount of HP counted per group member to 1000.

"/pohm greenThreshold 3000" will set the threshold where the text turns green to 3000.
"/pohm rank 5" will set the rank of PoH to cast when you click the window to 5

"/pohm hide" will hide the window
"/pohm show" will show the window
"/pohm reset" will reset the windows position
"/pohm lock" will lock the window's position
"/pohm unlock" will unlock the window's position
"/pohm bg" will toggle the background

Known Bugs:
-sometimes, when the party reaches full health, the display will be stuck at the last (small, i.e. 16) amount of HP. Seems like the "UNIT_HEALTH" event is not fired in that case. If someone knows a fix for this, enlighten me please.

Todo:
- further localization (if you would like to help me there, please contact me)

PoH Monitor