function toggle_search(el) {
	var win = document.getElementById('product_search_win');
	var arrow = el.getElementsByTagName('div')[0];

	if (win.style.display == 'none') {
		arrow.className = 'arrow arrow_up';
		win.style.display = 'block';
	} else {
		arrow.className = 'arrow arrow_down';
		win.style.display = 'none';
	}
}