//
function check_valid_fields()
{
//validation init
$("form#com_form  input, form#com_form textarea").each(function(i){
//$("form#com_form .validated").each(function(i){
  $(this).validate.init(this);
 }); 

    if ($("form#com_form .error").length>1)
    {
        alert("Error! Please fill all the required fields.");
        return false;
    }
    else if ($('#com_form input:checked').length==0)
    {
        alert("Error! Make checked at least one checkbox.");
        return false;
    }
    return true;
}

  $(document).ready(function(){
//check_valid_fields();
      $("#com_form").submit ( function() {
        if (!check_valid_fields())
            return false;
        else
        return true;    
      });
  });