// Javascript to implement The Zone Body Composition Calculator - Male Version // Tables and Methodology are taken from the book The Zone by Barry Sears, Ph.D. // Daniel R. Kibler October 20, 1997, 6:18 PM // ///////////////////////////////////////////////////////// // setup fat table ///////////////////////////////////////////////////////// // makeRow() function: // select row based on weight ///////////////////////////////////////////////////////// function makeRow(row) { if (row == 120) return new Array(4,6,8,10,12,14,16,18,20,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,50,52,54) if (row == 125) return new Array(4,6,7,9,11,13,15,17,19,20,22,24,26,28,30,32,33,35,37,39,41,43,45,46,48,50,52,54) if (row == 130) return new Array(3,5,7,9,11,12,14,16,18,20,21,23,25,27,28,30,32,34,36,37,39,41,43,44,46,48,50,52,53,55) if (row == 135) return new Array(3,5,7,8,10,12,13,15,17,19,20,22,24,26,27,29,31,32,34,36,38,39,41,43,44,46,48,50,51,53,55) if (row == 140) return new Array(3,5,6,8,10,11,13,15,16,18,19,21,23,24,26,28,29,31,33,34,36,38,39,41,43,44,46,48,49,51,53,54) if (row == 145) return new Array(null,4,6,7,9,11,12,14,15,17,19,20,22,23,25,27,28,30,31,33,35,36,38,39,41,43,44,46,47,49,51,52,54,55) if (row == 150) return new Array(null,4,6,7,9,10,12,13,15,16,18,19,21,23,24,26,27,29,30,32,33,35,36,38,40,41,43,44,46,47,49,50,52,53,55) if (row == 155) return new Array(null,4,5,6,8,10,11,13,14,16,17,19,20,22,23,25,26,28,29,31,32,34,35,37,38,40,41,43,44,46,47,49,50,52,53,55) if (row == 160) return new Array(null,4,5,6,8,9,11,12,14,15,17,18,19,21,22,24,25,27,28,30,31,33,34,35,37,38,40,41,43,44,46,47,48,50,51,53,54) if (row == 165) return new Array(null,3,5,6,8,9,10,12,13,15,16,17,19,20,22,23,24,26,27,29,30,31,33,34,36,37,38,40,41,43,44,45,47,48,50,51,52,54,55) if (row == 170) return new Array(null,3,4,6,7,9,10,11,13,14,15,17,18,19,21,22,24,25,26,28,29,30,32,33,34,36,37,39,40,41,43,44,45,47,48,49,51,52,54,55) if (row == 175) return new Array(null,null,4,6,7,8,10,11,12,12,15,16,17,19,20,21,23,24,25,27,28,29,31,32,33,35,36,37,39,40,41,43,44,45,47,48,49,51,52,53,55) if (row == 180) return new Array(null,null,4,5,7,8,9,10,12,13,14,16,17,18,19,21,22,23,25,26,27,28,30,31,32,34,35,36,37,39,40,41,43,44,45,47,48,49,50,52,53,54) if (row == 185) return new Array(null,null,4,5,6,8,9,10,11,13,14,15,16,18,19,20,21,23,24,25,26,28,29,30,31,33,34,35,36,38,39,40,41,43,44,45,46,48,49,50,51,53,54,55) if (row == 190) return new Array(null,null,4,5,6,7,8,10,11,12,13,15,16,17,18,19,21,22,23,24,26,27,28,29,30,32,33,34,35,37,38,39,40,41,43,44,45,46,48,49,50,51,52,54,55) if (row == 195) return new Array(null,null,3,5,6,7,8,9,11,12,13,14,15,16,18,19,20,21,22,24,25,26,27,28,30,31,32,33,34,35,37,38,39,40,41,43,44,45,46,47,49,50,51,52,53,55) if (row == 200) return new Array(null,null,3,4,6,7,8,9,10,11,12,14,15,16,17,18,19,21,22,23,24,25,26,28,29,30,31,32,33,35,36,37,38,39,40,41,43,44,45,46,47,48,50,51,52,53,54,55) if (row == 205) return new Array(null,null,null,4,5,6,8,9,10,11,12,13,14,15,17,18,19,20,21,22,23,25,26,27,28,29,30,31,32,34,35,36,37,38,39,40,41,43,44,45,46,47,48,49,51,52,53,54,55) if (row == 210) return new Array(null,null,null,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19,21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,37,38,39,40,42,43,44,45,46,47,48,49,50,51,53,54,55) if (row == 215) return new Array(null,null,null,4,5,6,7,8,9,10,11,12,13,15,16,17,18,19,20,21,22,23,24,25,26,28,29,30,31,32,33,34,35,36,37,38,39,40,42,43,44,45,46,47,48,49,50,51,52,53,54,55) if (row == 220) return new Array(null,null,null,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55) if (row == 225) return new Array(null,null,null,3,4,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55) if (row == 230) return new Array(null,null,null,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,30,31,32,33,34,35,36,37,38,39,40,41,42,44,44,45,46,47,48,49,50,51,52,53,54,55) if (row == 235) return new Array(null,null,null,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,51,52,53,54,55) if (row == 240) return new Array(null,null,null,null,4,5,6,7,8,9,10,11,12,13,14,15,16,17,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,46,47,48,49,50,51,52,53,54) if (row == 245) return new Array(null,null,null,null,4,5,6,7,8,9,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,44,45,46,47,48,49,50,51,52,53) if (row == 250) return new Array(null,null,null,null,4,5,6,6,7,8,9,10,11,12,13,14,15,16,17,18,18,19,20,21,22,23,24,25,26,27,28,29,30,31,31,32,33,34,35,36,37,38,39,40,41,42,43,44,44,45,46,47,48,49,50,51,52) if (row == 255) return new Array(null,null,null,null,3,4,5,6,7,8,9,10,11,12,13,14,14,15,16,17,18,19,20,21,22,23,24,24,25,26,27,28,29,30,31,32,33,34,34,35,36,37,38,39,40,41,42,43,44,44,45,46,47,48,49,50,51) if (row == 260) return new Array(null,null,null,null,3,4,5,6,7,8,9,10,10,11,12,13,14,15,16,17,18,19,19,20,21,22,23,24,25,26,27,27,28,29,30,31,32,33,34,35,35,36,37,38,39,40,41,42,43,43,44,45,46,47,48,49,50) if (row == 265) return new Array(null,null,null,null,null,4,5,6,7,8,8,9,10,11,12,13,14,15,15,16,17,18,19,20,21,22,22,23,24,25,26,27,28,29,29,30,31,32,33,34,35,36,36,37,38,39,40,41,42,43,43,44,45,46,47,48,49) if (row == 270) return new Array(null,null,null,null,null,4,5,6,7,7,8,9,10,11,12,13,13,14,15,16,17,18,19,19,20,21,22,23,24,25,25,26,27,28,29,30,31,31,32,33,34,35,36,37,37,38,39,40,41,42,43,43,44,45,46,47,48) if (row == 275) return new Array(null,null,null,null,null,4,5,5,6,7,8,9,10,11,11,12,13,14,15,16,16,17,18,19,20,21,22,22,23,24,25,26,27,27,28,29,30,31,32,32,33,34,35,36,37,38,38,39,40,41,42,43,43,44,45,46,47) if (row == 280) return new Array(null,null,null,null,null,4,4,5,6,7,8,9,9,10,11,12,13,14,14,15,16,17,18,19,19,20,21,22,23,24,24,25,26,27,28,29,29,30,31,32,33,33,34,35,36,37,38,38,39,40,41,42,43,43,44,45,46) if (row == 285) return new Array(null,null,null,null,null,4,4,5,6,7,8,8,9,10,11,12,12,13,14,15,16,17,17,18,19,20,21,21,22,23,24,25,26,26,27,28,29,30,30,31,32,33,34,34,35,36,37,38,39,39,40,41,42,43,43,44,45) if (row == 290) return new Array(null,null,null,null,null,3,4,5,6,7,7,8,9,10,11,11,12,13,14,15,15,16,17,18,19,19,20,21,22,23,23,24,25,26,27,27,28,29,30,31,31,32,33,34,35,35,36,37,38,39,39,40,41,42,43,43,44) if (row == 295) return new Array(null,null,null,null,null,3,4,5,6,6,7,8,9,10,10,11,12,13,14,14,15,16,17,17,18,19,20,21,21,22,23,24,25,25,26,27,28,28,29,30,31,32,32,33,34,35,36,36,37,38,39,39,40,41,42,43,43) if (row == 300) return new Array(null,null,null,null,null,3,4,5,5,6,7,8,9,9,10,11,12,12,13,14,15,16,16,17,18,19,19,20,21,22,22,23,24,25,26,26,27,28,29,29,30,31,32,33,33,34,35,36,36,37,38,39,39,40,41,42,43) } /////////////////////////////////////////////////////////// // table() function: // create row and select column /////////////////////////////////////////////////////////// function table(row,column) { theRow = makeRow(row) column = (column - 22) * 2 return theRow[column] } /////////////////////////////////////////////////////////// // validate() function: // validates float and range of the passed arguments /////////////////////////////////////////////////////////// function validate(obj,min,max) { //convert to float if necessary var theValue = parseFloat(obj.value) if ((!theValue) || ( theValue < min) || ( theValue > max)){ alert("Please enter a value between " + min + " and " + max + " for " + obj.name + ".") obj.focus() obj.select() } else obj.value = theValue } /////////////////////////////////////////////////////////// // calcTotal() function: // Calculates the totals /////////////////////////////////////////////////////////// function calcTotal() { var wwMin = 22 var wwMax = 50 var activityFactorIndex = 1 if (!validateForm()) return var ww = document.calcForm.waist.value - document.calcForm.wrist.value if ( (ww < wwMin) || ( ww > wwMax)){ alert("Waist - Wrist is out of range (" + wwMin + " -> " + wwMax + ").") return } var row = Math.round(document.calcForm.totalWeight.value / 5) * 5 var column = Math.round( (document.calcForm.waist.value - document.calcForm.wrist.value) * 2) / 2 document.calcForm.percentFat.value = table(row,column); document.calcForm.fat.value = Math.round(document.calcForm.totalWeight.value * document.calcForm.percentFat.value / 100); document.calcForm.lean.value = (document.calcForm.totalWeight.value - document.calcForm.fat.value); activityFactorIndex = document.calcForm.activityFactor.selectedIndex; document.calcForm.protein.value = (document.calcForm.lean.value * document.calcForm.activityFactor.options[activityFactorIndex].value); document.calcForm.blocks.value = (Math.round (document.calcForm.protein.value / 7)); } ////////////////////////////////////////////////////////////////////// // validateForm() function: // Validates input of entire form. ////////////////////////////////////////////////////////////////////// function validateForm() { var fixThis = ""; if (!(exists(document.calcForm.waist.value))) { fixThis += "Please enter a numeric value for the waist field.\n"; } if (!(exists(document.calcForm.wrist.value))) { fixThis += "Please enter a numeric value for the wrist field.\n"; } if (!(exists(document.calcForm.totalWeight.value))) { fixThis += "Please enter a numeric value for the weight field.\n"; } if (fixThis != "") { alert(fixThis); return 0 } else { return 1; } } ////////////////////////////////////////////////////////////////////// // exists() function: // Validates there has been a entry. ////////////////////////////////////////////////////////////////////// function exists(s) { if (s == "") return 0 else return 1 } ////////////////////////////////////////////////////////////////////// // saveValues() function: // Saves user entered values to a cookie named "zoneCalcMale". ////////////////////////////////////////////////////////////////////// function saveValues() { with( document.calcForm ) { myCookieValue = waist.value + ":" + wrist.value + ":" + totalWeight.value + ":" + activityFactor.selectedIndex } today = new Date() var theYear = today.getYear() < 100 ? today.getYear() + 1900 : today.getYear() myCookieDate = new Date( theYear + 5,today.getMonth(),today.getDate()) //alert( myCookieDate) SetCookie ("zoneCalcMale", myCookieValue, myCookieDate, "/") } ////////////////////////////////////////////////////////////////////// // getValues() function: // Retrieves user entered values from a cookie named "zoneCalcMale". ////////////////////////////////////////////////////////////////////// function getValues() { var savedValues = GetCookie("zoneCalcMale") if ( savedValues != null) { var a = savedValues.split (":") with( document.calcForm ) { waist.value = a[0] wrist.value = a[1] totalWeight.value = a[2] activityFactor.selectedIndex = a[3] } } } // // Function to create or update a cookie. // name - String object containing the cookie name. // value - String object containing the cookie value. May contain // any valid string characters. // [expires] - Date object containing the expiration data of the cookie. If // omitted or null, expires the cookie at the end of the current session. // [path] - String object indicating the path for which the cookie is valid. // If omitted or null, uses the path of the calling document. // [domain] - String object indicating the domain for which the cookie is // valid. If omitted or null, uses the domain of the calling document. // [secure] - Boolean (true/false) value indicating whether cookie transmission // requires a secure channel (HTTPS). // // The first two parameters are required. The others, if supplied, must // be passed in the order listed above. To omit an unused optional field, // use null as a place holder. For example, to call SetCookie using name, // value and path, you would code: // // SetCookie ("myCookieName", "myCookieValue", null, "/"); // // Note that trailing omitted parameters do not require a placeholder. // // To set a secure cookie for path "/myPath", that expires after the // current session, you might code: // // SetCookie (myCookieVar, cookieValueVar, null, "/myPath", null, true); // function SetCookie (name,value,expires,path,domain,secure) { document.cookie = name + "=" + escape (value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : ""); } // // "Internal" function to return the decoded value of a cookie // function getCookieVal (offset) { var endstr = document.cookie.indexOf (";", offset); if (endstr == -1) endstr = document.cookie.length; return unescape(document.cookie.substring(offset, endstr)); } // // Function to return the value of the cookie specified by "name". // name - String object containing the cookie name. // returns - String object containing the cookie value, or null if // the cookie does not exist. // function GetCookie(name) { var arg = name + "="; var alen = arg.length; var clen = document.cookie.length; var i = 0; while (i < clen) { var j = i + alen; if (document.cookie.substring(i, j) == arg) return getCookieVal (j); i = document.cookie.indexOf(" ", i) + 1; if (i == 0) break; } return null; }