function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);


function clear_userID(){
		if(document.login_form.username.value=='username'){
				document.login_form.username.value = '';
		}
		
		if(document.login_form.password.value==''){
				document.login_form.password.value = 'password';
		}
}


function clear_password(){
		if(document.login_form.password.value=='password'){
				document.login_form.password.value ='';
		}
		
		if(document.login_form.username.value==''){
				document.login_form.username.value = 'username';
		}
}

function check_login()
{
	if(document.login_form.username.value=="" || document.login_form.username.value=="username"){
		alert("Bitte tragen Sie Ihren Benutzer-Namen ein.");
		document.login_form.username.focus();
	return false;
	}
	if(document.login_form.password.value=="" || document.login_form.password.value=="password"){
		alert("Bitte tragen Sie Ihr Passwort ein.");
		document.login_form.password.focus();
	return false;
	}

	document.login_form.submit()
}