$('#add-asset-form').submit(function(){
    //if (validate_asset_form()) {
    $.ajax({
             type: 'POST',
             url: 'wp-content/themes/tvmarketing/assetform/ajax-req.php',
             cache: false,
             data: $('#add-asset-form').serialize(),
             error:   function(){ alert('error'); },
             success: function(data){
                       alert('sucessful');
                       $("#ajax-res").html(data);
                       $('#edit-id').val('');
                       $('#add-asset-form')[0].reset();
                      }
            });
            //}
    return false;
 });