使用php/javascript在链接上提交表单

我有一个模板，其中使用css创建了一个带有链接的按钮，因此我希望该按钮在该链接上提交表单，我尝试过了，但没有发生任何事情，请帮助我，谢谢

<?php
$errors = array();
if(isset($_POST['submit'])=="Find Moving Service") {
echo 'Form Submitted!';
}
?>
<form action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="post" name="myForm" id="myForm" >
<input type="hidden" name="submit" value="Find Moving Service"  />
<select name="category">
                <option value="" >Select a category</option>
                <option value="Local Movers" >Local Movers</option>
                <option value="Long Distance Movers" >Long Distance Movers</option>
                <option value="Office Movers" >Office Movers</option>
                <option value="International Movers" >International Movers</option> 
            </select>
        <a href="javascript: submitform()" title="Find Moving Service" class="button_big big_green float-right">Find Moving Service<i></i></a>
        </form>
<script type="text/javascript">
function submitform()
{
  if(document.myForm.onsubmit())
  {
    document.myForm.submit();
  }
}
</script>