Info not sending through ajax to php file -

i trying have submit button send php file , give popup notification been completed. when run following, gives me notification no info posted. redirects empty search.php no post data. need give popup, submit info, , stay on same page. cant seem figure out what's wrong form

html:

                <div class="panel-body">                     <div class="row">                     <form class="request" action="search.php" method="post">                         <div class="col-lg-12">                             <form role="form">                                 <div class="form-group">                                 <p>wo notations appear @ top of work order screen. submit useful information can provided builders/centerpoint. other importation information may include bricks, scaffles, dogs, or home owners preventing installation. sure include phone numbers if available.</p>                                     <label>information</label>                                     <div><input class="form-control" placeholder="enter information here" type="text" name="comment[]"></div>                                 </div>                                 <button type="submit" name="notation" class="btn btn-default" onclick="addnotation(<?php echo $orow['workorder']; ?>);">submit button</button>                                 <button type="reset" class="btn btn-default">reset button</button>                             </form>                         </div>                     </div>                 </div>   

ajax

<!-- notation --> <script> function addnotation(wo)     {             jquery.ajax({             type: "post",             url: "functions/wonotation.php",             data: 'wo='+wo,             cache: false,             success: function(response)         {                 alert("your notation has been added work order");           }                     });     }    </script> 

php (wonotation.php)

<?php  include("../../db.php");  $woid = $_post['wo']; $date = date('m-d-y'); $notationsql = "insert comments (workorder, comment, priority, date) values ('".$woid."', '".$_post['comment']."', '1', '".$date"')"; mysql_query($notationsql) or die(mysql_error());  ?> 

you should change data this:

data: {wo: wo}