Using JavaScript, You can change your background color dynamically.
To understand what is going on, take a look at how the link is coded. <form> <input type="radio" name="color" value="white" onClick="document.bgColor='ffffff'">White <input type="radio" name="color" value="pink" onClick="document.bgColor='ffb6c1'">Pink <input type="radio" name="color" value="blue" onClick="document.bgColor='add8e6'">Blue <input type="radio" name="color" value="green" onClick="document.bgColor='90ee90'">Green </form> bgColor is the property that changes background color. |