function checkLogin()
{
	var u = document.auth.username.value;
	var p = document.auth.password.value;
	var r = document.auth.rand.value;
	if (u.length<1){
		alert("Input your username and password to enter.");
		return false;
	}
	if (p.length>0)
	{

		//var md5user = hex_hmac_md5(u,r);
		var md5pass = hex_hmac_md5(hex_md5(p),r);

// 		document.auth.username.value="";
		document.auth.password.value="";
		document.auth.rand.value="";

		//document.auth.user.value = md5user;
		document.auth.pass.value = md5pass;
		return true;
	}
	else
	{
		alert("Input your username and password to enter.");
		return false;
	}
}
function checkPassword(){
	
	var p = document.auth.password.value;
	var r = document.auth.rand.value;

	if (p.length>0)
	{
		var md5pass = hex_hmac_md5(hex_md5(p),r);
		document.auth.password.value="";
		document.auth.pass.value = md5pass;
		return true;
	}
	else
	{
		alert("Input your password to continue.");
		return false;
	}
}