var currentShown = '';
function ShowDiv(divID) {
	var showDiv = document.getElementById(divID);
	if (currentShown!='' && showDiv!=currentShown) {
//		alert(currentShown.style.display);
		currentShown.style.display = "none";
	}
	if (showDiv!=currentShown) {
		showDiv.style.display = "block";
		currentShown = showDiv;
	} else {
		//currentShown = '';
	}	
}