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    copied!<p>I would change your code slightly.</p> <p>First, I'd make a method to print the table:</p> <pre><code>function printMatrix(var matrix) { document.writeln('&lt;table border="1"&gt;'); for (i = 0; i &lt; 9; i++) { document.writeln('&lt;tr&gt;'); for (j = 0; j &lt; 9; j++) document.writeln('&lt;td&gt;' + matrix[i][j] + '&lt;/td&gt;'); document.writeln('&lt;/tr&gt;'); } document.writeln('&lt;/table&gt;'); } </code></pre> <p>Then, I'd make a method for the swapping:</p> <pre><code>function sawpTwoNumbers(matrix) { document.writeln("The random numbers are:"); document.writeln('&lt;br&gt;'); var r1 = Math.ceil(Math.random() * 9); var r2 = Math.ceil(Math.random() * 9); document.writeln(r1); document.writeln(r2); document.writeln('&lt;br&gt;'); // This is new code: for(int i=0; i&lt; matrix.length; i++){ var r1Index = matrix[i].indexOf(r1); var r2Index = matrix[i].indexOf(r2); matrix[i][r1Index] = r2; matrix[i][r2Index] = r1; } } </code></pre> <p>Next, I'd put your code in the pageLoad method:</p> <pre><code>function pageLoad() { var matrix = new Array(); matrix[0]=[1,2,3,4,5,6,7,8,9]; matrix[1]=[4,5,6,7,8,9,1,2,3]; matrix[2]=[7,8,9,1,2,3,4,5,6]; matrix[3]=[2,3,4,5,6,7,8,9,1]; matrix[4]=[5,6,7,8,9,1,2,3,4]; matrix[5]=[8,9,1,2,3,4,5,6,7]; matrix[6]=[3,4,5,6,7,8,9,1,2]; matrix[7]=[6,7,8,9,1,2,3,4,5]; matrix[8]=[9,1,2,3,4,5,6,7,8]; printMatrix(matrix); // This is new code: // It will call the swap method and the print method 30 times. for(int i = 0; i &lt; 30; i++) { swapTwoNumbers(matrix); printMatrix(matrix); } } </code></pre> <p><strong>Please Note:</strong> I haven't tested this code. I don't guarantee that it works. I hope it'll give you a push in the right direction though.</p>
 

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