var currentwork = 1;

	function work_next(service) {
		if (currentwork>=lastwork-3) return false;
		//document.getElementById('sml_prev').src='i/btn_prev.png';

		id_count = 1
		tmp_work = currentwork+1;

		do {
			if (service) { document.getElementById('sml_work'+id_count).src='sml_work_'+tmp_work+'.jpg'; }
				else { document.getElementById('sml_work'+id_count).src='work/sml_work_'+tmp_work+'.jpg'; }
			tmp_work++;
		} while (id_count++!=4)

		currentwork = tmp_work-4;
		//if (currentwork>=lastwork-3) document.getElementById('sml_next').src='i/btn_next_dis.png';
	}

	function work_prev(service) {
		if (currentwork==1) return false;
		//document.getElementById('sml_next').src='i/btn_next.png';

		id_count = 1
		tmp_work = currentwork-1;

		do {
			if (service) { document.getElementById('sml_work'+id_count).src='sml_work_'+tmp_work+'.jpg'; }
				else { document.getElementById('sml_work'+id_count).src='work/sml_work_'+tmp_work+'.jpg'; }
			tmp_work++;
		} while (id_count++!=4)

		currentwork = tmp_work-4;
		//if (currentwork==1) document.getElementById('sml_prev').src='i/btn_prev_dis.png';
	}

	function work_view(work_id, service) {
		active_work = work_id+currentwork;
		if (service) { document.getElementById('work').src='img_work_'+active_work+'.jpg'; }
			else { document.getElementById('work').src='work/img_work_'+active_work+'.jpg'; }
	}