function checkUsername()
	{
		username = document.getElementById("login").value;
		x_checkUsername(username, checkUsername_cb);
	}
function checkUsername_cb(call)
	{
		if(!call)
			{
				document.getElementById("login_image").src = "images/various/fail.gif";
				document.getElementById("login_image").title = "This login is not available.";
			}
		else
			{
				document.getElementById("login_image").src = "images/various/win.gif";
				document.getElementById("login_image").title = "This login is available.";
			}
	}
function checkPassword()
	{
		password1 = document.getElementById("password1").value;
		password2 = document.getElementById("password2").value;
		if(password1 != password2 || password1.length < 4 || password2.length < 4)
			{
				document.getElementById("password_image").src = "images/various/fail.gif";
				document.getElementById("password_image").title = "Passwords don't match.";
			}
		else
			{
				document.getElementById("password_image").src = "images/various/win.gif";
				document.getElementById("password_image").title = "Passwords OK.";
			
			}
	}