verification code image is not showing???

<div id="contactform">
[+validationmessage+]
<form action="[~[*id*]~]" id="feedbackForm" method="post">
	<fieldset class="fieldset">
	<label accesskey="n" for="name">Your Name<span class="required">(required)</span></label><br />
	<input class="textfield" id="name" name="name" type="text" />
<br />
	<label accesskey="e" for="email">Your Email Address<span class="required">(required)</span></label><br />
	<input class="textfield" id="email" maxlength="40" name="email" size="40" type="text" />
<br />
	<label accesskey="p" for="email">Phone number</label><br />
	<input class="textfield" id="phone" name="phone" type="text" />
<br />
	<label accesskey="c" for="comments">Message<span class="required">(required)</span></label><br />
	<textarea class="textarea" cols="30" id="comments" name="comments" rows="4"></textarea>
	<br />
	<p>
	Please enter the anti spam code below:<br />
	<img alt="verification code" src="[+verimageurl+]" />
	</p>
	<label accesskey="c" for="vericode">code</label><br />
	<input class="textfield" id="vericode" name="vericode" size="20" type="text" value="vericode" />
	<br />
	<input class="submitbutton" id="submit" name="submit" type="submit" value="Submit" />
<br />
	</fieldset>
</form>
</div>