How is child custody jurisdiction established?

Recent laws have been passed concerning child-napping. If one parent disagrees with the court’s decision, he or she might attempt to take the child(ren) to another state and thus ( each state has different guidelines or principles ) re-open the issue of custodial rights. There are several elements which determine the proper state in which child custody is determined: length of time the child has resided in the state, any previous court proceedings regardless of respective state concerning child custody, the residency of each parent, and so on.