Changing a number upon every refresh?

How could I generate a random number every refresh using html and javascript?

I have the javascript that would generate a decimal number.

        function DecimalGenerate() {
    var min = 1.03,
        max = 5.99,
        NumberResult = Math.random() * (max - min) + min;

    alert(parseFloat(NumberResult).toFixed( 2 ));
};

DecimalGenerate();