Fitness Program

function convert_metric() { if(document.getElementById("cm").value != "") { height = document.getElementById("cm").value/100; var feet = height* 3.2808399; var inches = Math.round((feet - Math.floor(feet))*12); feet = Math.floor(feet); var field = ["feet","inches"]; for(x in field) { document.getElementById(field[x]).value = eval(field[x]); document.getElementById(field[x]).readOnly = true; } } if(document.getElementById("hipcm").value != "") { hip = document.getElementById("hipcm").value; inches = Math.round(hip/.254)/10; document.getElementById("hipinches").value = inches; document.getElementById("hipinches").readOnly = true; } if(document.getElementById("KG").value!="") { weight = parseFloat(document.getElementById("KG").value); document.getElementById("pounds").value = Math.round(weight * 22.046226)/10 ; document.getElementById("pounds").readOnly = true; }

} function convert_american() { if(document.getElementById("feet").value != "") { var inches = document.getElementById("feet").value * 12;

if(document.getElementById("inches").value != "") inches += parseFloat(document.getElementById("inches").value);

document.getElementById("cm").value = height = Math.round(inches*25.4)/10; document.getElementById("cm").readOnly =true; height /= 100; } if(document.getElementById("hipinches").value != "") { hip = document.getElementById("hipinches").value*2.54; document.getElementById("hipcm").value = Math.round(hip*10)/10; document.getElementById("hipcm").readOnly =true; } if(document.getElementById("pounds").value != "") { document.getElementById("KG").value = weight = Math.round(document.getElementById("pounds").value * 4.5359237)/10; document.getElementById("KG").readOnly =true; } }

function find_weight() { var BMI; if(document.getElementById("BMI").value != "" && height != null) { BMI=parseFloat(document.getElementById("BMI").value); weight = height*height*BMI; document.getElementById("KG").value = Math.round(weight*10)/10; convert_metric(); BMI_result(BMI); } } function find_hip() { var BAI; if(document.getElementById("BAI").value != "" && height!=null) { BAI = parseFloat(document.getElementById("BAI").value); hip = Math.pow(height,1.5)*(BAI+18); document.getElementById("hipcm").value = Math.round(hip*10)/10; convert_metric(); BAI_result(BAI); } } function calc_BAI() { if(hip != null && height != null) { var BAI = hip / Math.pow(height, 1.5)-18; document.getElementById("BAI").value = Math.round(BAI*10)/10; BAI_result(BAI); } } function BAI_result(BAI) { var gender = document.getElementById("gender").selectedIndex; var age = document.getElementById("age").selectedIndex; var result; for(i=0;i