Retrieve data from dynamic web page written in JavaScript

[#1]

Hi,

I got question for the code below for retrieving the table from a web URL which is a dynamic web page with backend JavaScript. Since I couldn't get the data, wondering what is the best way to do it.

T:
LOAD Month,
 Charts,
 Last,
 Change,
 PriorSettle,
 Open,
 High,
 Low,
 Volume,
 [Hi /Lo Limit],
 Updated,
 F12,
 F13,
 F14,
 F15,
 F16,
 F17,
 F18,
 F19,
 F20,
 F21,
 F22,
 F23,
 F24,
 F25,
 F26,
 F27,
 F28,
 F29,
 F30,
 F31,
 F32,
 F33,
 F34,
 F35,
 F36,
 F37,
 F38,
 F39,
 F40,
 F41,
 F42,
 F43,
 F44,
 F45,
 F46,
 F47,
 F48,
 F49,
 F50,
 F51,
 F52,
 F53,
 F54,
 F55,
 F56,
 F57,
 F58,
 F59,
 F60,
 F61,
 F62,
 F63,
 F64,
 F65,
 F66,
 F67,
 F68,
 F69,
 F70,
 F71,
 F72,
 F73,
 F74,
 F75,
 F76,
 F77,
 F78,
 F79,
 F80,
 F81,
 F82,
 F83,
 F84,
 F85,
 F86,
 F87,
 F88,
 F89,
 F90,
 F91,
 F92,
 F93,
 F94,
 F95,
 F96,
 F97,
 F98,
 F99,
 F100
FROM [http://www.cmegroup.com/trading/energy/natural-gas/natural-gas.html] (html, ansi, embedded labels, table is @1);

Thanks,

CJ