var visibility = 0;
function over(obj){
	targetElement = document.getElementById(obj);
	targetElement.style.display = "block";
}
function out(obj){
	targetElement = document.getElementById(obj);
	targetElement.style.display = "none";
}
function Switch(obj) {
	if (eval(obj).style.display =="block") 
		Hide(obj);
	else
		Show(obj);
} 
function Show(obj) {
	eval(obj).style.display="block";
	visibility = 1;
}
function Hide(obj) {
	eval(obj).style.display="none";
	visibility = 0;
}