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// class find routines
// t.w.wolfgang december 31, 1998

function goFind()
	{
	var lookup = new Array(48)
	// lookups for all classes except N-7 and N-7A
	lookup[0] = "18705,18763,N-4"
	lookup[1] = "18800,18857,N-4A"
	lookup[2] = "18860,18890,N-4B"
	lookup[3] = "19568,19570,N-5A"
	lookup[4] = "23000,23179,N-5C"
	lookup[5] = "18601,18701,N-5G"
	lookup[6] = "18430,18442,N-5H"
	lookup[7] = "18443,18449,N-5K"
	lookup[8] = "18906,18923,N-5P"
	lookup[9] = "18900,18905,N-5R"
	lookup[10] = "18006,18194,N-6A"
	lookup[11] = "21000,21099,N-7B"
	lookup[12] = "21496,21499,N-7C"
	lookup[13] = "21100,21146,N-7D"
	lookup[14] = "21150,21169,N-7E"
	lookup[15] = "23200,23402,N-8"
	lookup[16] = "18195,18354,N-9"
	lookup[17] = "18355,18394,N-9E"
	lookup[18] = "24000,24049,N-10"
	lookup[19] = "18450,18599,N-11"
	lookup[20] = "18930,18954,N-11F"
	lookup[21] = "24500,24549,N-12"
	lookup[22] = "22130,22139,N-20"
	lookup[23] = "21201,21313,N-21"
	lookup[24] = "30002,30008,MW"
	lookup[25] = "46100,46199,MW"
	lookup[26] = "901,903,MGA"
	lookup[27] = "22000,22018,N-8D"
	lookup[28] = "19900,19909,N-8D"
	lookup[29] = "22801,22993,N-5B"
	lookup[30] = "20001,20075,N-5B"
	lookup[31] = "19026,19417,N-5"
	lookup[32] = "19575,19575,N-5F"
	lookup[33] = "22983,22983,N-5E"
	lookup[34] = "20076,20076,N-5E"
	lookup[35] = "20077,20077,N-5"
	lookup[36] = "19600,19600,N-3"
	lookup[37] = "19654,19654,N-3"
	lookup[38] = "19660,19660,N-3"
	lookup[39] = "19653,19653,N-3A"
	lookup[40] = "19655,19659,N-3A"
	lookup[41] = "19661,19678,N-3A"
	lookup[42] = "23800,23821,NE-6"
	lookup[43] = "23823,23880,NE-6"
	lookup[44] = "23622,23679,N-8A"
	lookup[45] = "23505,23620,N-8B"
	lookup[46] = "19605,19885,NE-6"
	lookup[47] = "23822,23822,N-8B"
	var desNum = eval(document.forms[0].elements[0].value)
	var classURL = ""
	// check if it an N-7 or N-7A
	if (desNum >= 21500 && desNum <= 21798)
		{
		//first two digits are always 21
		desNum = desNum - 21000
		//check if N-7
		var carList = "500,501,502,503,504,505,506,507,508,509,510,511,512,515,516,517,518,520,522,524,525,533,534,535,537,539,545,547,548,549,550,551,552,561,562,564,582,585,594,603,605,610,615,618,619,621,622,641,647,648,653,654,657,658,669,673,680,681,682,683,684,685,687,690,696,698,702,703,705,713,720,721,734,736,740,741,745,746,748,751,753,754,755,756,759,763,765,768,776,785,791,792,795,796"
		var listArray = carList.split(",")
		for (var c = 0;c <= listArray.length-1 ;c++)
 			{
 			if (desNum == eval(listArray[c]))
 				{
 				classURL = "classes/N-7.htm"
 				break
 				}
 			}
		if (classURL == "")
			{
			//if not N-7 check if N-7A
			carList = "513,514,519,521,526,527,528,529,530,531,532,538,540,541,542,543,544,553,554,555,556,557,558,559,560,563,565,566,567,568,569,570,571,572,573,574,575,576,577,578,579,580,581,583,584,586,588,589,590,591,592,593,595,596,597,599,600,601,606,607,608,609,611,612,613,614,616,617,620,623,624,625,626,627,628,629,630,631,632,635,636,637,638,639,640,642,643,644,645,646,649,650,655,656,660,661,662,663,664,665,666,667,668,670,671,672,674,675,677,678,686,691,692,693,694,697,699,700,701,704,706,707,709,710,711,712,714,715,716,717,718,722,723,724,725,726,727,728,729,730,731,732,735,737,738,739,742,743,744,747,749,750,752,757,758,760,761,762,764,767,769,770,771,772,773,774,775,777,778,779,780,781,782,783,784,786,787,788,789,790,794,797,798"
			listArray = carList.split(",")
			for (var c = 0;c <= listArray.length-1;c++)
 				{
 				if (desNum == eval(listArray[c]))
 					{
 					classURL = "classes/N-7A.htm"
 					break
 					}
 				}
			}
		}
		else
		{
	 	// not an N-7 or N-7A, check other classes
		for (var c = 0;c <= 47;c++)
 			{
 			var carCheck = lookup[c].split(",")
 			if (desNum >= eval(carCheck[0]) && desNum <= eval(carCheck[1]))
 				{
 				classURL = "classes/" + carCheck[2] + ".htm"
 				break
 				}
 			}
		}
 	// go to matched class
	if (classURL == "")
		{
		alert("Sorry, that is not a valid number for a Conrail caboose.")
		}
		else
		{
		window.location = classURL
		}
	}

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