function init() {
//showDebug();
Get("age").focus();
}
window.onload = init;
//Cross-browser cross-frame element retrieval
function Get( oName, oFrame, oDoc ) {
if( !oDoc ) { if( oFrame ) { oDoc = oFrame.document; } else { oDoc = window.document; } }
if( oDoc[oName] ) { return oDoc[oName]; } if( oDoc.all && oDoc.all[oName] ) { return oDoc.all[oName]; }
if( oDoc.getElementById && oDoc.getElementById(oName) ) { return oDoc.getElementById(oName); }
for( var x = 0; x < oDoc.forms.length; x++ ) { if( oDoc.forms[x][oName] ) { return oDoc.forms[x][oName]; } }
for( var x = 0; x < oDoc.anchors.length; x++ ) { if( oDoc.anchors[x].name == oName ) { return oDoc.anchors[x]; } }
for( var x = 0; document.layers && x < oDoc.layers.length; x++ ) {
var theOb = Get( oName, null, oDoc.layers[x].document ); if( theOb ) { return theOb; } }
if( !oFrame && window[oName] ) { return window[oName]; } if( oFrame && oFrame[oName] ) { return oFrame[oName]; }
for( var x = 0; oFrame && oFrame.frames && x < oFrame.frames.length; x++ ) {
var theOb = Get( oName, oFrame.frames[x], oFrame.frames[x].document ); if( theOb ) { return theOb; } }
return null;
}
// Numeric test
function isNumeric(num, fieldPrompt, fieldName) {
var regTest=/(^\d+$)|(^\d+\.\d+$)/
if (regTest.test(num))
return true;
else {
if (fieldPrompt) {
alert(fieldPrompt + " Must be a valid number");
Get(fieldName).focus();
Get(fieldName).select();
}
return false;
}
}
function printPage (elementPrint) {
var printDiv = Get(elementPrint);
if (document.getElementsByTagName) {
linkEl = document.getElementsByTagName('link');
styleEl= document.getElementsByTagName('style');
}
printWindow = window.open("","printWindow","left=50,top=50,width=400,height=400,scrollbars=yes,"+"status=yes,resizable=yes");
printWindow.opener = self;
d = printWindow.document;
//Write the printed contents
d.open();
d.writeln("" + document.title + "");
if (linkEl) {
d.writeln ("");
d.writeln ("");
}
d.writeln("");
d.writeln(printDiv.innerHTML);
d.writeln("
Calculated at www.freedieting.com/tools/calorie_calculator.htm");
d.writeln("");
d.close();
printWindow.print();
printWindow.close();
}
function calcIt() {
oForm = document.calc;
weight = parseInt(Get("weight").value*1);
age = parseInt(Get("age").value*1);
feet = parseInt(Get("feet").value*1);
inches = parseInt(Get("inches").value*1);
if (!isNumeric(age,"Age:","age"))
return false;
else if ( (age <= 12) || (age > 80)) {
alert ("Age must be between 13 and 80");
Get("age").focus();
Get("age").select();
return false;
}
if (!isNumeric(feet,"Feet:","feet"))
return false;
else if ( (feet < 4) || (feet > 7) ) {
alert ("Height must be between 4 and 7 feet");
Get("feet").focus();
Get("feet").select();
return false;
}
if (!isNumeric(inches,"Inches:","inches"))
return false;
optObject = Get("weighttype");
if (optObject[0].checked)
weight = weight/2.2;
if (!isNumeric(weight,"Weight:","weight"))
return false;
else if ( (weight <= 40) || (weight > 500) ) {
alert ("Please enter a valid weight");
Get("weight").focus();
Get("weight").select();
return false;
}
height = ((feet*12) + inches) * 2.54;
optObject = Get("sex");
if (optObject[1].checked) {
//Male
//result = 66.5 + (13.75 * weight) + (5.003 * height) - (6.775 * age); //HB
//result = 879 + (10.2 * weight); // Owen's
result = 5 + (10 * weight) + (6.25 * height) - (5 * age); //Miffin
} else {
//Femme
//result = 655.1 + (9.563 * weight) + (1.850 * height) - (4.676 * age);
//result = 795 + (7.18 * weight);
result = -161 + (10*weight) + (6.25 * height) - (5 * age);
}
var maintain = result * Get("activity").options[Get("activity").selectedIndex].value;
rockBottom = (weight*2.2)*8;
var suffix = " Calories/day";
s = '' + Math.round(maintain) + '' + suffix;
Get("answer").innerHTML = s;
loseFat = maintain - (maintain*0.20)
if (loseFat < rockBottom)
loseFat = rockBottom;
var extLoseFat = maintain - (maintain*0.40)
if (extLoseFat < rockBottom)
extLoseFat = rockBottom;
s = '' + Math.round(extLoseFat) + " - " + Math.round(loseFat) + '' + suffix;
Get("lose").innerHTML = s;
return true;
}