function showRace(race)
{
    if(race == "Human")
    {
        document.getElementById('race').innerHTML = "<font color=#235715>Bonuses: +9% atk, +9% def, +4% health, +4% evasion</font>";
    }
    //-->
}



<td align="center" width="50%">
<select name="regrace" onChange="showRace(this.value)">
<option>--Select Race--</option>
<option>Human</option>
<option>Orc</option>
<option>Elf</option>
</select>
<br>
<span id="race"></span>
</td>