Tabla de multiplicar... otra manera, para ''n''

<meta charset="UTF-8">
<h1>MULTIPLIER TABLE</h1>
<script>
    function saltarLinea() {
        document.write("<br>");    
        document.write("<br>");    
        document.write("<br>" + "<hr>");
        document.write("<br>");    
        document.write("<br>");

    }  
    function imprimir(frase) {
        document.write("<big>" + frase + "</big>");
        saltarLinea();
    }

    var multiplying = parseInt(prompt("Enter the multiplying: "));
    var multiplier = parseInt(prompt("Enter the multiplier: "));
    var multiplying2 = multiplying;
    var multiplier2 = multiplier;

    var i = 1;
    imprimir(multiplying * multiplier); 
    imprimir("WHILE ROUTINE");
    while (i <= multiplier){
        imprimir(multiplying + " x " + i + " = " +(multiplying * i));
        i = i + 1;
    }

imprimir("FOR ROUTINE");
    for (i=1; i <= multiplier2; i++){
        imprimir(multiplying2 + " x " + i + " = " + (multiplying2 * i));
    }
    imprimir("Game over");




</script>