Can't read form values

I have taken your form and have tested it.

Code:

<form action="#" id="agencyForm" class="form-horizontal">                        
   <input type="hidden" name="agency_id" value="25" id="agency_id ">                            
   <div class="form-group">
       <div class="controls">
           <input type="text" name="input_name" class="form-control"  placeholder="Agency name">
           <span class="help-block"></span>
       </div>
   </div>
   <div class="form-group">
       <div class="controls">
           <input type="text" name="input_category" class="form-control"  placeholder="Category">
           <span class="help-block"></span>
       </div>
   </div>
   <div class="form-group">
       <div class="controls">
           <input type="text" name="input_address" class="form-control" placeholder="Address">
           <span class="help-block"></span>
       </div>
   </div>
   <div class="form-group">
       <div class="controls">
           <input type="text" name="input_acronym" class="form-control"  placeholder="Acronym">
           <span class="help-block"></span>
       </div>
   </div>
           
   <!-- <input type="submit " name="regisSubmit " class="btn-primary " value="Submit " /> -->
   <button type="submit" value="submit" onclick="save(this.form); return false" class="btn btn-primary">Save</button>
</form>

It worked. The field values are serialized and available in the $_POST array.

Maybe a stupid question but what values are you expecting?