// JavaScript Document
function maximalgewicht()
{
   var gewicht=document.getElementById('gewicht').value;
   var wdh=document.getElementById('wdh').value;
   document.getElementById('max').value=Math.round(gewicht/(1.0278-(.0278*wdh)));
}
function kjoule()
{
   var eingabe=document.getElementById('eingabe').value;
   document.getElementById('kcal').value=Math.round(eingabe*0.239);
   document.getElementById('kj').value=Math.round(eingabe*4.185);
}

function proportion() {
if (!document.getElementById('umfang').value || isNaN(document.getElementById('umfang').value) ) {
return false;
}
var brust = document.getElementById('umfang').value * 6.5;
document.getElementById('brustu').value = brust;
document.getElementById('tailleu').value = Math.round(brust * .7 * 10)/10;
document.getElementById('hueftu').value = Math.round(brust * .85 * 10)/10;
document.getElementById('bizepsu').value = Math.round(brust * .36 * 10)/10;
document.getElementById('unterarmu').value = Math.round(brust * .29 * 10)/10;
document.getElementById('oberschenkelu').value = Math.round(brust * .53 * 10)/10;
document.getElementById('wadenu').value = Math.round(brust * .36 * 10)/10;
document.getElementById('nackenu').value = Math.round(brust * .37 * 10)/10;
}

function bmi() {
	var gewicht=document.getElementById('gewicht').value;
	var groesse=document.getElementById('groesse').value;
	document.getElementById('bmi').value=Math.round(gewicht/Math.pow(groesse/100, 2)*10)/10;	
}

function kal_bed() {
	var gewicht=document.getElementById('gewicht').value;
	var belastung=parseInt(document.getElementById('belastung').options[document.getElementById('belastung').selectedIndex].value);
	var typ=document.getElementById('typ').options[document.getElementById('typ').selectedIndex].value;
	var ziel=parseInt(document.getElementById('ziel').options[document.getElementById('ziel').selectedIndex].value);
	var temp_kal = Math.round(gewicht*24*10)/10;
	var proz_kal = temp_kal*belastung/100;
	var gesamt_kal = parseInt(temp_kal+ziel+proz_kal);
	var joule = Math.round(gesamt_kal*4.1868*10)/10;
	document.getElementById('kcal').value=gesamt_kal;
	document.getElementById('joule').value=joule;
}