function getHeight() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myHeight = window.innerHeight;
  } else if( document.documentElement &&
      document.documentElement.clientHeight ) {
    //IE 6+ in 'standards compliant mode'
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && document.body.clientHeight ) {
    //IE 4 compatible
    myHeight = document.body.clientHeight;
  }
  return(myHeight);
}

function lichtop(item) {
  var licht = document.getElementById('l'+item);
  var dim = document.getElementById('d'+item);
  //window.status="in element:"+item;
  dim.style.display='none';
  licht.style.display='';
}

function dimmen(item) {
  var licht = document.getElementById('l'+item);
  var dim = document.getElementById('d'+item);
  //window.status="in element:"+item;
  licht.style.display='none';
  dim.style.display='';
}

function NewCapcha() {
	document.getElementById('captcha').src = '/securimage/securimage_show.php?'+Math.random(); 
	return false;
}