alright ready to jerk it again? it's really funny and my kids think it is funny too (i hope they don't think i am the same age as the grandma)! we took two of my grand daughters to friendly’s for supper and some ice cream. our theme this year is an evening at the derby. but they end up being guys who get in trouble. although i have better than average verbal skills, i need to work on making my point understood and my body language needs to be more in agreement with my words. the key difference is how the function g(x,t) is found. 