Altered layout and fixed some comments, fixed total reduction of diameter display (was only two-digit accuracy is now three)

analyser.js

@@ -9,9 +9,9 @@ var dataElong = [];
 var dataAngle = [];
 var dataDelta = [];
 
-///// START OF MATHS FUNCTIONS /////
+///// MATHS FUNCTIONS /////
 
-// This function gets the reduction of area with two provided sizes, and returns it
+// Calculate Reduction of Area
 function getReduction(startSize, finalSize) {
     var startArea = Math.PI * ((startSize / 2) * (startSize / 2));
     var finalArea = Math.PI * ((finalSize / 2) * (finalSize / 2));
@@ -24,28 +24,33 @@ function getElongation(startSize, finalSize) {
     return (Math.pow(startSize / finalSize, 2) - 1) * 100;
 }
 
+ // Calculate delta
 function getDelta(startSize, finalSize, angle) {
     angle = (angle * 0.5) * (Math.PI / 180);  // Convert to semi-angle and radians
     return ((startSize + finalSize) / (startSize - finalSize)) * Math.sin(angle);
 }
 
+// Calculate Reduction of Diameter
+function getRoDiameter(startSize, finishSize){
+    return (startSize - finishSize) / ((startSize + finishSize) / 2) * 100;
+}
+
+// Convert number to millimetres
 function toMillimetres(size) { //convert to mm
     size = Math.round((size * 100) * 25.4) / 100;
     return size;
 }
 
+// Convert number to inches
 function toInches(size) { //convert to inches
     size = Math.round((size * 1000) / 25.4) / 1000;
     return size;
 }
 
-function getRoDiameter(startSize, finishSize){
-    return (startSize - finishSize) / ((startSize + finishSize) / 2) * 100;
-}
-
 ///// END OF MATHS SECTION /////
 
-///// START OF DISPLAY SECTION /////
+
+///// ALGORITHMS SECTION /////
 
 function addReduction() {
     numDies ++; // Increment our die count
@@ -72,7 +77,8 @@ function addReduction() {
 }
 
 function removeReduction() { // function to remove the last row
-    numDies --;
+    if (numDies > 1) {
+        numDies--;
         document.getElementById("data").deleteRow(-1); // delete the last row in the table
 
         // Remove the last item in each array to remove the tick from the graph
@@ -84,12 +90,11 @@ function removeReduction() { // function to remove the last row
         if (outputVisible == 1) {  // Check if out output is visible and update immediately when adding dies
             doMath();
         }
+    } else {
+        numDies = 1;
+    }
 }
 
-///// END OF DISPLAY SECTION /////
-
-///// START OF ALGORITHMS SECTION /////
-
 function doMath() {
     outputVisible = 1; // set visible status to enabled
     outputTable = document.getElementById("output"); // Select our output data table
@@ -138,20 +143,11 @@ function doMath() {
         }
             
         // Format our numbers to prevent maximum user stupidity
-        if (inSize < 10.0 && inSize > 0) {  // If we have a 'proper' number i.e. ".130"
-            inSize = Number(inSize);
-        } else {  // re-format the number if it's 'wrong' i.e. "130"
-            inSize = inSize / 1000;
-        }
-        if (outSize < 10.0 && outSize > 0) {  // If we have a 'proper' number i.e. ".130"
-            outSize = Number(outSize);
-        } else {  // re-format the number if it's 'wrong' i.e. "130"
-            outSize = outSize / 1000;
-        }
+        inSize = formatCheck(inSize);
+        outSize = formatCheck(outSize);
 
         row[i] = outputTable.insertRow(i); // Add a new row to the END of the table
 
-
         // Add all our cells to the table
         // We also give them HTML ID's to format things with CSS nicely
         cell1 = row[i].insertCell(0);
@@ -430,7 +426,7 @@ function getStatistics() {
     // COL 1
     c1.innerHTML = "Total R. Of Diameter: ";
     c1.id = "statsCol4";
-    c2.innerHTML = "<b>" + (Math.round((startSize - finalSize) * 1000) / 1000).toFixed(2) + "\"</b>";
+    c2.innerHTML = "<b>" + (Math.round((startSize - finalSize) * 1000) / 1000).toFixed(3) + "\"</b>";
     c2.id = "statsCol5";
     //
     c3.innerHTML = "|&nbsp;&nbsp;";
@@ -525,11 +521,12 @@ function clearScreen() {
     addReduction();
 }
 
+///// END ALGORITHMS SECTION /////
 
-///// END OF ALGORITHMS SECTION /////
 
-///// EXTRA SECTION  /////
+///// EXTRAs SECTION  /////
 
+// Convert the page to a print layout, and open the OS/browser print dialog
 function printScreen() {
     var subtitle = document.getElementById("subtitle");
     var reductionCount = document.getElementById("numReductions");
@@ -537,7 +534,6 @@ function printScreen() {
     // Get input size, and format it
     var inputSize = document.getElementById("die0").value;
     
-    
     // If our start size is metric show that, otherwise swap them to show 'murican first
     if (document.getElementById("metric").checked) {
         var inputText = inputSize + " mm (" + toInches(inputSize) + "\")";
@@ -545,7 +541,6 @@ function printScreen() {
         var inputText = formatCheck(inputSize) + "\" (" + toMillimetres(formatCheck(inputSize)) + " mm)";
     }
 
-
     // Get the final size and format it
     var outputSize = document.getElementById("die" + numDies).value;
     outputSize = formatCheck(outputSize).toFixed(3);