function ShowAndHide (idf) {
	el = document.getElementById(idf).style;
	el.display = (el.display == 'block') ? 'none' : 'block';
	if (idf == "sub1") {
		a = "sub2";
	}
	if (idf == "sub2") {
		a = "sub1";
	}


	fl = document.getElementById(a).style;
	fl.display = 'none';
   

}

function HideAll () {
	for (i = 1; i < 3; i++) {
		document.getElementById('sub'+i).style.display = 'none';
	}
}