function hide(obj,stat) {
	if (stat == "true") {
		document.getElementById(obj).style.display = "none";
	} else if (stat == 'change' && document.getElementById(obj).style.display == 'none') {
		document.getElementById(obj).style.display = "block";
	} else if (stat == 'change' && document.getElementById(obj).style.display == 'block') {
		document.getElementById(obj).style.display = "none";
	} else {
		document.getElementById(obj).style.display = "block";
	}
}

function clear_mail(obj) {
	if (obj.value == 'E-MAIL') {
		obj.value = '';
	}
}
	
function clear_pwd(obj) {
	if (obj.value == '******') {
		obj.value = '';
	}
}