function check0()
{
	if (IsNull(document.getElementById("email").value))
	{
		alert("Please input your E-mail!");
		document.getElementById("email").focus();
		return false;
	}
}
function check1()
{
	if (IsNull(document.getElementById("pwdkey").value))
	{
		alert("Please input your password answer");
		document.getElementById("pwdkey").focus();
		return false;
	}
}
function check2()
{
	if (IsNull(document.getElementById("new_pass").value))
	{
		alert("Please input your new password!");
		document.getElementById("new_pass").focus();
		return false;
	}
	if (IsNull(document.getElementById("re_pass").value))
	{
		alert("Import confirmation code");
		document.getElementById("re_pass").focus();
		return false;
	}
	if (document.getElementById("new_pass").value!=document.getElementById("re_pass").value)
	{
		alert("Two different input password, please re-entry. ");
		document.getElementById("new_pass").value="";
		document.getElementById("re_pass").value="";
		document.getElementById("new_pass").focus();
		return false;
	}
}