function if_upload_file( upload_form_id ) {
	var upload_form = document.getElementById( upload_form_id );

	<!-- upload files for GIFIM -->

	if( upload_form.name == 'gifim_upload_file_form' ) {
		hide_error( 'gifim_upload_file_form_error' );
		var upload_file = document.getElementById( 'gifim_upload_file' );
		if( upload_file && upload_file.value.length == 0 ) {
			show_error( 'gifim_upload_file_form_error', 'Please, select image before uploading' );
			return false;
		} else {
			if( ! check_file_format( upload_file.value ) ) {
				show_error( 'gifim_upload_file_form_error', 'Sorry, only JPG, GIF and PNG images are supported' );
				return false;
			}

			var WaiterObj = document.getElementById('waiter_save');
			if( WaiterObj ) {
				setTimeout( 'document.getElementById("waiter_save_img").src = "/img/design/uploading.gif"', 50 );
				WaiterObj.style.display = "block";
			}
			var SaveButtonObj = document.getElementById('save');
			SaveButtonObj.style.display = "none";

			upload_form.submit();
			return true;
		}
	}
}