function showElement(element) {
	var elementToShow = document.getElementById(element);
	elementToShow.style.display="block";
	elementToHide = elementToShow;
}

function  hideElement () {
	// var divToHide = document.getElementById(div);
	if (typeof (elementToHide) != "undefined") {
		elementToHide.style.display="none";
		delete elementToHide;
	}
}

function  swapDisplay (element) {
	if ((typeof (elementToHide) != "undefined") && (elementToHide == document.getElementById(element))) {
		hideElement();
	} else {
		hideElement();
		showElement(element);
	}
}