/* pi = prodloes items */

function pi(id, items) {
	/* set number of avaible items from 1-x */
	for(var i = 1; i<=items; i++) {
		document.getElementById('img' + i).style.visibility = 'hidden';
		document.getElementById('product_' + i).style.display = 'none';
		document.getElementById('submenu_' + i).className = '';
	}
	document.getElementById('img' + id).style.visibility = 'visible';
	document.getElementById('product_' + id).style.display = 'block';
	document.getElementById('submenu_' + id).className = 'activated';
	
}