function openDiv (elName) {
	var theElemenet = document.getElementById(elName);
	if (theElemenet) {
		theElemenet.style.display = "block";
	}
}

function closeDiv (elName) {
	var theElemenet = document.getElementById(elName);
	if (theElemenet) {
		theElemenet.style.display = "none";
	}
}
function switchDiv(targetId) {
	var target = document.getElementById(targetId);
	if (target.style.display == "none"){
		target.style.display="";
	} else {
		target.style.display="none";
	}
}