// variables used in calculateHRzones()
var minimumPuls = 0;
var maximumPuls = 0;
var pulsDiff = 0;
var Z50 = 0;
var Z55 = 0;
var Z60 = 0;
var Z65 = 0;
var Z70 = 0;
var Z75 = 0;
var Z80 = 0;
var Z85 = 0;
var Z90 = 0;
var Z95 = 0;

// calculateHRzones()
// 2007-09-21
// Constructed - i.e.söderblom
function calculateHRzones()
{
	minPuls = eval(document.HRzones.minimumPuls.value);

//	age1 = eval(document.MaxPuls.age1.value);
//	restingPuls = eval(document.FormVo2max.restingPuls.value);


	maxPuls = eval(document.HRzones.maximumPuls.value);

	pulsDiff = maxPuls-minPuls;

//minPuls = 43;
//maxPuls = 179;
//pulsDiff = 136;

	Z50 = Math.round((pulsDiff * 0.50) + minPuls);
	Z55 = Math.round((pulsDiff * 0.55) + minPuls);
	Z60 = Math.round((pulsDiff * 0.60) + minPuls);
	Z65 = Math.round((pulsDiff * 0.65) + minPuls);
	Z70 = Math.round((pulsDiff * 0.70) + minPuls);
	Z75 = Math.round((pulsDiff * 0.75) + minPuls);
	Z80 = Math.round((pulsDiff * 0.80) + minPuls);
	Z85 = Math.round((pulsDiff * 0.85) + minPuls);
	Z90 = Math.round((pulsDiff * 0.90) + minPuls);
	Z95 = Math.round((pulsDiff * 0.95) + minPuls);


	document.HRzones.Z50.value = Z50;
	document.HRzones.Z55.value = Z55;
	document.HRzones.Z60.value = Z60;
	document.HRzones.Z65.value = Z65;
	document.HRzones.Z70.value = Z70;
	document.HRzones.Z75.value = Z75;
	document.HRzones.Z80.value = Z80;
	document.HRzones.Z85.value = Z85;
	document.HRzones.Z90.value = Z90;
	document.HRzones.Z95.value = Z95;
	document.HRzones.maxPuls.value = maxPuls;

}