//Get The Main Scene Root
var scene=ccbGetRootSceneNode()
//collect Fog information
var fogState=ccbGetSceneNodeProperty(scene,"Fog")

//Check the State of the Fog
if(fogState==false)
{
//Turn Fog On
ccbSetSceneNodeProperty(scene,"Fog",true)
}else
{
//turn Fog Off
ccbSetSceneNodeProperty(scene,"Fog",false)
}