/* toggle an element's display */
function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}

/* quick getElement reference */
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}


function setActiveTab(itemNum) {
  for (var ctr=1; ctr<=8; ctr++)
  {
    $('sec' + ctr).style.display = 'none';
    $('mnu' + ctr).className = '';
  }
  $('sec' + itemNum).style.display = '';
  $('mnu' + itemNum).className = 'active';
}