function header_clear_email(){
	emailfield = document.getElementById('header_email');
	if(emailfield.value == 'eMail')	
		emailfield.value = '';
}

// set password input field for login 
function header_password_setpw(){
	pwfield = document.getElementById("header_password");
	if(pwfield.value=='Passwort'){
		pwfield.value='';
		pwfield.type = 'password';
	}
}

function header_password_settext(){
	pwfield = document.getElementById("header_password");
	if(pwfield.value==''){
		this.type='text';
		this.value='Passwort';
	}
}