巧妙的應用Label，設置焦點
<label for="txtFirstName">First Name:</label><br />
<input class="input" type="text" title="Enter your first name" maxlength="" size="" name="txtFirstName" id="txtFirstName" value="">Age:<br />
<input class="input" type="radio" title="Choose from one of the options" name="radAge" id="radAge4_0" value="Under30"><label for="radAge4_0"> Under 30</label><br>
<input class="input" type="radio" title="Choose from one of the options" name="radAge" id="radAge4_1" value="Over30"><label for="radAge4_1"> Over 30</label><br>
