radio button

<script type="text/javascript">
<!--
function analyzeColor3(myColor) {
    if (myColor == "Blue") {
        alert("Just like the sky!");
        }
    else if (myColor == "Red") {
        alert("Just like shiraz!");
    }
    else {
        alert("Suit yourself then...");
    }
}
//-->
</script>
<h3>Favorite Color</h3>
<input type="radio" name="fav_color3" value="Blue" onclick="analyzeColor3(this.value);" /> Blue <br />
<input type="radio" name="fav_color3" value="Red" onclick="analyzeColor3(this.value);" /> Red <br />
<input type="radio" name="fav_color3" value="Green" onclick="analyzeColor3(this.value);" /> Green <br />
<input type="radio" name="fav_color3" value="None" onclick="analyzeColor3(this.value);" /> None -->

hasilnya

Favorite Color

Blue
Red
Green
None