Tribuadore solutions

Below are my minimal solutions to the Elevator Crush Saga challenges.

78 characters (solves 1, 6, 7, 17)

{init:eval,update:function(D,E){E[0].goToFloor(~~(Math.random()*4))}}

88 characters (solves 1, 2, 3, 6, 7, 17)

{init:eval,update:function(D,E){if(!I)I=T=U=1;T+=D;if(U<T){U+=2;E[0].goToFloor(I++%4)}}}