if(login_cookie_inhoud()!=null)
								{
									document.log_form.log_button.value="Log off";
								}
								else 
								{
									document.log_form.log_button.value="Log in";
								}

function log_wissel()
								{
									if (document.log_form.log_button.value=="Log in") location.href='http://www.vael.com/login.php?ref=/'
									else 
									{var datum = new Date();
									 datum.setTime(datum.getTime()-86400000);
									 var verval = '; expires='+datum.toGMTString();
								     document.cookie = "login_session="+""+verval+"; path=/";
								     window.location.reload(true);
									}
								}