HTML contact form is not emailing me...... HELP! Options

[Ranger Buck]

Here's the HTML code that is on my website on the sidebar. It used to email me when someone filled out a contact form but somebody made some changes and now it's not working. What do I have to do to get this working again?

<div class="span4 redbg">
<div class="spacer">
<h2 class="source">Start Your Free Estimate Now</h2>
<form id="contactForm" method="post" action="http://charliemikeconstruction.com/">
<input type="text" name="name" class="wideinput" placeholder="Name..." />
<input type="text" name="email" class="wideinput" placeholder="Email..." />
<input type="text" name="phone" class="wideinput" placeholder="Phone..." />
<select name="work" class="wideselect">
<option value="">Type of work interested in...</option>
<option value="Roofing">Roofing</option>
<option value="Foundation">Flooring</option>
<option value="Fencing">Fencing</option>
<option value="Painting">Christmas</option>
<option value="Remodeling">Remodeling</option>
<option value="Other Services">Other Services</option>
</select>
<input type="text" name="hearaboutus" class="wideinput" placeholder="How did you hear about us?" />
<input type="text" name="cityyoulive" class="wideinput" placeholder="What city do you live in?" />
<textarea name="comment" class="wideinput" placeholder="Explain your needs in detail..."></textarea>
<span style="text-align:right;"><input type="submit" value="Contact Us" name="submit" class="btn" /></span>
</form>
</div>
</div>