function changebg() {
  if(document.getElementById('white-txt').className == 'ggg2'){
      document.getElementById('white-txt').className = 'ggg1';
      //setCookie("onlight_style", "1", "Mon, 01-Jan-2020 00:00:00 GMT", "/");
      var onlight_style=1;
     new Effect.Morph('white-txt',
  {
  style:"background-color:#ffffff",
  duration:0
     });
  }else{
      document.getElementById('white-txt').className = 'ggg2';
      //setCookie("onlight_style", "2", "Mon, 01-Jan-2020 00:00:00 GMT", "/");
      var onlight_style=2;
     new Effect.Morph('white-txt',
  {
  style:"background-color:#000000",
  duration:0
     });
  }
  
  
  var url    = 'ajax.php';
  var params = 'onlight_style=' + onlight_style;
  new Ajax.Request(url, {
		  method: 'get',
		  parameters: params,
		  onSuccess: function(transport) {
		    //alert(transport.responseText);
		  }
		});

  
  
}









function setCookie (name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}
function changebgblack() {
  if(document.getElementById('white-txt').className == 'ggg2'){
      document.getElementById('white-txt').className = 'ggg3';
     new Effect.Morph('white-txt',
  {
  style:"background-color:#000000",
  duration:0
     });
  }
}