// JavaScript Document

function perRound(num, precision) {

	var precision = 3; //default value if not passed from caller, change if desired

	// remark if passed from caller

	precision = parseInt(precision); // make certain the decimal precision is an integer

    var result1 = num * Math.pow(10, precision);

    var result2 = Math.round(result1);

    var result3 = result2 / Math.pow(10, precision);

    return zerosPad(result3, precision);

}



function zerosPad(rndVal, decPlaces) {

    var valStrg = rndVal.toString(); // Convert the number to a string

    var decLoc = valStrg.indexOf("."); // Locate the decimal point

    // check for a decimal 

    if (decLoc == -1) {

        decPartLen = 0; // If no decimal, then all decimal places will be padded with 0s

        // If decPlaces is greater than zero, add a decimal point

        valStrg += decPlaces > 0 ? "." : "";

    }

    else {

        decPartLen = valStrg.length - decLoc - 1; // If there is a decimal already, only the needed decimal places will be padded with 0s

    }

     var totalPad = decPlaces - decPartLen;    // Calculate the number of decimal places that need to be padded with 0s

    if (totalPad > 0) {

        // Pad the string with 0s

        for (var cntrVal = 1; cntrVal <= totalPad; cntrVal++) 

            valStrg += "0";

        }

    return valStrg;

}

// send the value in as "num" in a variable



// clears field of default value

function clear_field(field) {

		if (field.value==field.defaultValue) {

			field.value=''

		}

	}



err=0;	

	

function calc()

{



data = new Array(

new Array(27,0,900), new Array(27,20,1140), new Array(27,40,1320), new Array(27,60,1500), 

new Array(28,0,945), new Array(28,20,1185), new Array(28,40,1365), new Array(27,60,1560), 

new Array(29,0,990), new Array(29,20,1230), new Array(29,40,1410), new Array(29,60,1620), 

new Array(30,0,1020), new Array(30,20,1260), new Array(30,40,1440), new Array(30,60,1665), 

new Array(31,0,1050), new Array(31,20,1290), new Array(31,40,1470), new Array(31,60,1710), 

new Array(32,0,1095), new Array(32,20,1350), new Array(32,40,1530), new Array(32,60,1770), 

new Array(33,0,1140), new Array(33,20,1410), new Array(33,40,1590), new Array(33,60,1830), 

new Array(34,0,1170), new Array(34,20,1440), new Array(34,40,1650), new Array(34,60,1885), 

new Array(35,0,1185), new Array(35,20,1455), new Array(35,40,1680), new Array(35,60,1950), 

new Array(36,0,1200), new Array(36,20,1470), new Array(36,40,1710), new Array(36,60,2040), 

new Array(37,0,1245), new Array(37,20,1515), new Array(37,40,1755), new Array(37,60,2100), 

new Array(38,0,1290), new Array(38,20,1560), new Array(38,40,1800), new Array(38,60,2160), 

new Array(39,0,1335), new Array(39,20,1605), new Array(39,40,1845), new Array(39,60,2205), 

new Array(40,0,1350), new Array(40,20,1650), new Array(40,40,1890), new Array(40,60,2250), 

new Array(41,0,1395), new Array(41,20,1695), new Array(41,40,1935), new Array(41,60,2310), 

new Array(42,0,1440), new Array(42,20,1740), new Array(42,40,1980), new Array(42,60,2370), 

new Array(43,0,1470), new Array(43,20,1795), new Array(43,40,2040), new Array(43,60,2480), 

new Array(44,0,1500), new Array(44,20,1850), new Array(44,40,2210), new Array(44,60,2520), 

new Array(45,0,1550), new Array(45,20,1950), new Array(45,40,2190), new Array(45,60,2580), 

new Array(46,0,1570), new Array(46,20,2010), new Array(46,40,2250), new Array(46,60,2640), 

new Array(47,0,1590), new Array(47,20,2070), new Array(47,40,2310), new Array(47,60,2700), 

new Array(48,0,1620), new Array(48,20,2100), new Array(48,40,2380), new Array(48,60,2745), 

new Array(49,0,1650), new Array(49,20,2130), new Array(49,40,2430), new Array(49,60,2790), 

new Array(50,0,1695), new Array(50,20,2175), new Array(50,40,2475), new Array(50,60,2850), 

new Array(51,0,1740), new Array(51,20,2220), new Array(51,40,2520), new Array(51,60,2910), 

new Array(52,0,1755), new Array(52,20,2240), new Array(52,40,2560), new Array(52,60,2940), 

new Array(53,0,1770), new Array(53,20,2260), new Array(53,40,2600), new Array(53,60,2970), 

new Array(54,0,1800), new Array(54,20,2280), new Array(54,40,2640), new Array(54,60,3000), 

new Array(55,0,1845), new Array(55,20,2325), new Array(55,40,2685), new Array(55,60,3045), 

new Array(56,0,1890), new Array(56,20,2370), new Array(56,40,2730), new Array(56,60,3090), 

new Array(57,0,1925), new Array(57,20,2400), new Array(57,40,2760), new Array(57,60,3120), 

new Array(58,0,1950), new Array(58,20,2430), new Array(58,40,2790), new Array(58,60,3150), 

new Array(59,0,1995), new Array(59,20,2475), new Array(59,40,2835), new Array(59,60,3195), 

new Array(60,0,2040), new Array(60,20,2520), new Array(60,40,2880), new Array(60,60,3240), 

new Array(61,0,2060), new Array(61,20,2540), new Array(61,40,2900), new Array(61,60,3260), 

new Array(62,0,2080), new Array(62,20,2560), new Array(62,40,2920), new Array(62,60,3280), 

new Array(63,0,2100), new Array(63,20,2580), new Array(63,40,2940), new Array(63,60,3300), 

new Array(64,0,2145), new Array(64,20,2625), new Array(64,40,2985), new Array(64,60,3345), 

new Array(65,0,2190), new Array(65,20,2670), new Array(65,40,3030), new Array(65,60,3390), 

new Array(66,0,2230), new Array(66,20,2700), new Array(66,40,3060), new Array(66,60,3420), 

new Array(67,0,2250), new Array(67,20,2730), new Array(67,40,3090), new Array(67,60,3450), 

new Array(68,0,2295), new Array(68,20,2775), new Array(68,40,3145), new Array(68,60,3495), 

new Array(69,0,2340), new Array(69,20,2820), new Array(69,40,3180), new Array(69,60,3540), 

new Array(70,0,2360), new Array(70,20,2840), new Array(70,40,3200), new Array(70,60,3560), 

new Array(71,0,2380), new Array(71,20,2860), new Array(71,40,3220), new Array(71,60,3580), 

new Array(72,0,2400), new Array(72,20,2880), new Array(72,40,3240), new Array(72,60,3600), 

new Array(73,0,2445), new Array(73,20,2925), new Array(73,40,3285), new Array(73,60,3645), 

new Array(74,0,2490), new Array(74,20,2970), new Array(74,40,3330), new Array(74,60,3690), 

new Array(75,0,2520), new Array(75,20,3000), new Array(75,40,3360), new Array(75,60,3720), 

new Array(76,0,2550), new Array(76,20,3030), new Array(76,40,3390), new Array(76,60,3750), 

new Array(77,0,2595), new Array(77,20,3075), new Array(77,40,3435), new Array(77,60,3795), 

new Array(78,0,2640), new Array(78,20,3120), new Array(78,40,3480), new Array(78,60,3840), 

new Array(79,0,2660), new Array(79,20,3140), new Array(79,40,3500), new Array(79,60,3860), 

new Array(80,0,2680), new Array(80,20,3160), new Array(80,40,3520), new Array(80,60,3880), 

new Array(81,0,2700), new Array(81,20,3180), new Array(81,40,3540), new Array(81,60,3900), 

new Array(82,0,2745), new Array(82,20,3225), new Array(82,40,3585), new Array(82,60,3945), 

new Array(83,0,2790), new Array(83,20,3270), new Array(83,40,3630), new Array(83,60,3990), 

new Array(84,0,2820), new Array(84,20,3300), new Array(84,40,3660), new Array(84,60,4020), 

new Array(85,0,2850), new Array(85,20,3330), new Array(85,40,3690), new Array(85,60,4050), 

new Array(86,0,2895), new Array(86,20,3375), new Array(86,40,3735), new Array(86,60,4095), 

new Array(87,0,2940), new Array(87,20,3420), new Array(87,40,3780), new Array(87,60,4140), 

new Array(88,0,2960), new Array(88,20,3440), new Array(88,40,3820), new Array(88,60,4160), 

new Array(89,0,2980), new Array(89,20,3460), new Array(89,40,3840), new Array(89,60,4180), 

new Array(90,0,3000), new Array(90,20,3480), new Array(90,40,3840), new Array(90,60,4200), 

new Array(91,0,3045), new Array(91,20,3525), new Array(91,40,3885), new Array(91,60,4245), 

new Array(92,0,3090), new Array(92,20,3570), new Array(92,40,3930), new Array(92,60,4290), 

new Array(93,0,3120), new Array(93,20,3600), new Array(93,40,3960), new Array(93,60,4320), 

new Array(94,0,3150), new Array(94,20,3630), new Array(94,40,3990), new Array(94,60,4350), 

new Array(95,0,3195), new Array(95,20,3675), new Array(95,40,4035), new Array(95,60,4395), 

new Array(96,0,3240), new Array(96,20,3720), new Array(96,40,4080), new Array(96,60,4440), 

new Array(97,0,3260), new Array(97,20,3740), new Array(97,40,4100), new Array(97,60,4460), 

new Array(98,0,3280), new Array(98,20,3760), new Array(98,40,4120), new Array(98,60,4480), 

new Array(99,0,3300), new Array(99,20,3780), new Array(99,40,4140), new Array(99,60,4500), 

new Array(100,0,3345), new Array(100,20,3825), new Array(100,40,4185), new Array(100,60,4545), 

new Array(101,0,3390), new Array(101,20,3870), new Array(101,40,4230), new Array(101,60,4590), 

new Array(102,0,3420), new Array(102,20,3900), new Array(102,40,4260), new Array(102,60,4620), 

new Array(103,0,3450), new Array(103,20,3930), new Array(103,40,4290), new Array(103,60,4650), 

new Array(104,0,3495), new Array(104,20,3975), new Array(104,40,4335), new Array(104,60,4695), 

new Array(105,0,3540), new Array(105,20,4020), new Array(105,40,4380), new Array(105,60,4740), 

new Array(106,0,3560), new Array(106,20,4040), new Array(106,40,4400), new Array(106,60,4760), 

new Array(107,0,3580), new Array(107,20,4060), new Array(107,40,4420), new Array(107,60,4780), 

new Array(108,0,3600), new Array(108,20,4080), new Array(108,40,4440), new Array(108,60,4800), 

new Array(109,0,3645), new Array(109,20,4125), new Array(109,40,4485), new Array(109,60,4845), 

new Array(110,0,3690), new Array(110,20,4170), new Array(110,40,4530), new Array(110,60,4890), 

new Array(111,0,3730), new Array(111,20,4200), new Array(111,40,4560), new Array(111,60,4920), 

new Array(112,0,3750), new Array(112,20,4230), new Array(112,40,4590), new Array(112,60,4950));





kg = parseInt(document.hydrate.kg.value) ;

min = document.hydrate.min.value ;

env = document.hydrate.env.value ;



if (min == "1") {

window.alert("Please select the daily exercise level that is applicable.")

err = 1;

}



if (env == "") {

window.alert("Please select the environmental condition that is applicable.")

err = 1;

}



if (kg < 27 || kg > 112) {

window.alert("Weight must be at least 27 kilograms (60 pounds) and no more than 112 kilograms (247 pounds)! Please correct the entry.")

err = 1;

}



if (err == 1) {

kg = 0;

err = 0;

}



for (i=0;i<=data.length-1;i++)

	{

	  if (data[i][0] == kg)

	   { 

		for (j=0;j<=2;j++)

		 {

	       if(data[i][j] == min)

		    {

			

			 ml = (data[i][j+1]);

		     document.hydrate.ml.value = (ml * env);

		     document.hydrate.oz.value =  perRound((33.814022701843/1000) * (ml * env));  // us oz

		     document.hydrate.ozi.value = perRound((35.18628793111174/1000) * (ml * env));  // imp oz

		     document.hydrate.gl.value =  perRound((33.814022701843/1000) * (ml * env)/8);  // glasses

		     break;

			}

		 }

	    }

	 }	

}