shifting

Hey all, the shifter on my shee went total limp. It still shifts but will not spring back to home position. Does any one have any ideas? Im sure if i keep riding like this im asking for problems. thanks.

Ok so I was riding around my '01 blaster today, and out of no where I wasnt able to shift. I was stuck in first gear and couldnt shift into any other gear including neutral. Its like the shifter was jammed. Any ideas of what the problem may be???