I'm relative new to jQuery and I've been asked to create a hide/show function with a select tag. The function pretty much would be when you click on one of the options in the select tag it will open a div associate with the div of course. To be honest I have no idea how approach this function. I need help urgently, I have already tried many online but none have seem to work. Find below the html code. Thanks.

<div class="adwizard">
                            <select id="selectdrop" name="selectdrop" class="adwizard-bullet">
                                    <option value="adwizard">AdWizard</option>
                                    <option value="collateral">Collateral Ordering Tool</option>
                                    <option value="ebrochure">eBrochures</option>
                                    <option value="brand">Brand Center</option>
                                    <option value="funtees">FunTees</option>
                            </select>
                    </div>

                     <div class="panels">   
                        <div id="adwizard" class="sub-box showhide">
                            <img src="../images/bookccl/img-adwizard.gif" width="95" height="24" alt="AdWizard" />
                            <p>Let Carnival help you grow your business with our great tools! Lor ipsum dolor sit amet. <a href="https://www.carnivaladwizard.com/home.asp">Learn More</a></p>
                        </div>

                         <div id="collateral" class="sub-box showhide">
                            <p>The Collateral Ordering Tool makes it easy for you to order destination brochures and the sales DVD for that upcoming event. <a href="http://carnival.litorders.com/workplace.asp">Learn More</a></p>
                        </div>

                        <div id="ebrochure" class="sub-box showhide">
                            <img src="../images/bookccl/img-ebrochure.gif" width="164" height="39" alt="Brochures" />
                            <p>Show your clients that you're listening to their specific vacation needs by delivering relevant planning info quickly.  <a href="http://productiontrade.carnivalbrochures.com/start.aspx">Learn More</a></p>
                        </div>

                         <div id="brand" class="sub-box showhide">
                            <p>Carnival Brand Center is where you'll find information on our strategy, guidlines, templates and artwork.   <a href="https://carnival.monigle2.net/user_info.asp?login_type=agent">Learn More</a></p>
                        </div>

                        <div id="funtees" class="sub-box showhide">
                            <img src="../images/bookccl/img-funtees.gif" width="164" height="39" alt="Funtees" />
                            <p>Create your very own Fun Design shirts to commemorate that special occasion aboard a Carnival "Fun Ship!"  <a href="http://carnival.victorydyo.com/">Learn More</a></p>
                        </div>
                    </div><!-- ends .panel -->
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                </div>