/* show one section */
var oldTargetNum;
function show(n, nMax) {
	var target;

	for (var i = 0; i <= nMax; i++) {
		//alert(i);
		target = document.getElementById('p' + i.toString());
		if (target != null) {
			if (target.style.display == 'block') oldTargetNum = i;
			if (i == n) target.style.display = 'block'
			else target.style.display = 'none';
		}
	}
}