function tabMO(el1, el2) {
	el1.style.display = 'none';
	el2.style.display = 'block';
}

function tabMO2(el, key, act) {

	var l = document.getElementById('ItabL'+key);
	var r = document.getElementById('ItabR'+key);
	var t = document.getElementById('ItabT'+key);
	var m = document.getElementById('ItabM'+key);
	var b = document.getElementById('ItabB'+key);

	if(act == 'set') { // set the mouseover
		l.style.backgroundImage = 'url(images/imgButtonHoverL.gif)';
		r.style.backgroundImage = 'url(images/imgButtonHoverR.gif)';
		t.style.backgroundImage = 'url(images/imgButtonHoverT.gif)';
		b.style.backgroundImage = 'url(images/imgButtonHoverB.gif)';
		m.style.background = '#efd74a';
	} else if(act == 'unset') { // unset the mouseover
		l.style.backgroundImage = 'url(images/imgButtonInactiveL.gif)';
		r.style.backgroundImage = 'url(images/imgButtonInactiveR.gif)';
		t.style.backgroundImage = 'url(images/imgButtonInactiveT.gif)';
		b.style.backgroundImage = 'url(images/imgButtonInactiveB.gif)';
		m.style.background = '#b5dfe7';
	}
}