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Message: [QUOTE="Andrew Poulos, post: 4982417"] Say I create an array like this: var p = []; p[0] = []; p[0][0] = ["0","1","2","3"]; p[0][1] = ["4","5","6","7"]; p[0][2] = ... p[1] = []; p[1][1] = ... and I've a method which will return the position of the first found element specified, as an array Array.prototype.findValue = function(v) { // blah }; so p.findValue("4") would return [0,1,1] how can I then refer to the (sub) array that the return value refers to? I can pop the return to get [0,1] but I don't know how to translate that to p[0][1] without building it up manually at the time I need it. I wishfully thought this might work p[0,1]. Andrew Poulos [/QUOTE]