clutch is acting up bad!!!!

It started with when i would put in reverse i would have the clutch depressed completly and it would move on its own, now recently when i press the clutch it has the normal presure but then it loses it and wants to go limp then when i let off it comes up and gets the presure back i can only depreses it about 1/4 of the way down could it be the clutch the slave cylnder or what PLEASE HELP ME!!!!!!!!!!!!

Not that I know much about clutches but I would try parking over a clean area and pressing the clutch all the way down and holding it then see if it's leaking underneath the car, or have someone hold it down and look under to see if maybe it's just leaking out of a hose or something.

It's either the clutch cylinder or slave cylinder. Have you made sure the master brake cylinder is full?