UserAgent 			indexOf beginning 	indexOf in array 	indexOf middle 	    indexOf not in array while beginning of array 	while in array 	while middle of array while not in array 			# Tests
Chrome 13.0.782		29,485,553			9,091,022			13,638,930			9,437,150			10,538,755			83,967,082			18,223,534			11,987,765			1
Firefox 7.0			4,550,417			2,172,041			3,038,403			3,419,162			2,025,874			4,581,419			2,840,546			2,670,208			1
Opera 11.51			8,970,576			1,522,144			2,716,011			1,475,691			3,311,819			34,975,476			5,802,201			3,294,612			1
Safari 5.1			19,789,237			3,919,065			6,824,440			4,070,327			3,652,805			44,709,423			6,647,720			3,649,064			1

indexOf beginning
29,485,553 + 4,550,417 + 8,970,576 + 19,789,237 = 62795783 / 4 = 15,698,945.75

indexOf in array
9,091,022 + 2,172,041 + 1,522,144 + 3,919,065 = 16704272 / 4 = 4,176,068

indexOf middle
13,638,930 + 3,038,403 + 2,716,011 + 6,824,440 = 26217784 / 4 = 6,554,446

indexOf not in array
9,437,150 + 3,419,162 + 1,475,691 + 4,070,327 = 18402330 / 4 = 4,600,582.5


15,698,945.75 + 4,176,068 + 6,554,446 + 4,600,582.5 = 31030042.25 / 4 = 7,757,510.5625


while beginning of array
10,538,755 + 2,025,874 + 3,311,819 + 3,652,805 = 19529253 / 4 = 4,882,313.25

while in array
83,967,082 + 4,581,419 + 34,975,476 + 44,709,423 = 168233400 / 4 = 42,058,350

while middle of array
18,223,534 + 2,840,546 + 5,802,201 + 6,647,720 = 33514001 / 4 = 8,378,500.25

while not in array
11,987,765 + 2,670,208 + 3,294,612 + 3,649,064 = 21601649 / 4 = 5,400,412.25


4,882,313.25 + 42,058,350 + 8,378,500.25 + 5,400,412.25 = 60719575.75 / 4 = 15,179,893.9375