lastModified value without Last-Modified http-header

このスクリプトは HTTP Header に LastModified ヘッダが含まれない場合の lastModified値がどうなるかを確認するためのものです

参考
NN3.01[ja](Win)01/01/70 09:00:00
NN4.78[ja](Win)Thursday, January 01, 1970 09:00:00
NN4.77(Linux)Thu 01 Jan 1970 09:00:00 AM JST
NN4.7(Mac OS 9)Jan 1 00:00:00 1970
Mozilla 0.9.8(all)January 1, 1970 GMT
IE4(Win)02/16/2002 03:34:56
IE5.0(Win)02/16/2002 12:34:56
IE5.5(Win)02/16/2002 12:34:56
IE6(Win)02/16/2002 12:34:56
IE5(Mac OS 9)Sat Feb 16 12:34:56 2002
IE5.12(Mac OS X)Sat Feb 16 12:34:56 2002

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