function createResponse()
{
	//document.getElementById('response').value = document.getElementById('password').value + ":"+document.getElementById('challenge').value;
	document.getElementById( 'response' ).value = hex_sha1(( document.getElementById( 'password' ).value)  + ":" + document.getElementById( 'challenge' ).value );
	document.getElementById( 'password' ).value = "";
	document.getElementById( 'challenge' ).value = "";
	return true;
}
function name_value(){
	var id;
 	id=document.getElementById('usern');
	if(id.value=='gebruikersnaam'){
		id.value='';
	}
	else if(id.value==''){
		id.value='gebruikersnaam';
	}
}
function pass_value(){
	var id;
 	id=document.getElementById('password');
	if(id.value=='wachtwoord'){
		id.value='';
		id.type="password";
	}
	else if(id.value==''){
		id.type='text';	
		id.value='wachtwoord';
	}
}