setOpenOnClick=function(){
  //sessvars.$.clearMem();
  if(sessvars.open == null) {
    sessvars.open = true;
    document.getElementById('open').className= "off";
  }
  if(sessvars.open) {
    sessvars.open = false;
    document.getElementById('open').className= "off";
    
    document.getElementById('logo').style.display = 'block';
    
  } else {
    sessvars.open = true;
    document.getElementById('open').className= "on";
    
    document.getElementById('logo').style.display = 'none';
    
  }      
}

setOpenOnLoad=function() {
  if(sessvars.open == null) {
    sessvars.open = true;
  }
  if(sessvars.open) {
    document.getElementById('hiddenmenu').style.display = "block";
    document.getElementById('open').className = "on";
    
    document.getElementById('logo').style.display = 'none';
  } else {
    document.getElementById('hiddenmenu').style.display = "none";
    document.getElementById('open').className = "off";
    
    document.getElementById('logo').style.display = 'block';   
  }
}