$(function ()
{
    $(document).keydown(function (k)
    {
        realWPM = Math.round((error_keystrokes / 5) / ((60.01 - countdown) / 60));

        if(realWPM < 0 || realWPM > 400)
        {
            realWPM = 0;
        }

        $('#preview').html("<font size='+3' style='color:black'><b>WPM:</b> " +
        realWPM);

        $('#words').before("<div id='preview'></div>");
    })
})