function ShowDisplay(ShowId){
  if (ShowId.style.display=='none'){
	  ShowId.style.display='';
	}
	else{	  
    ShowId.style.display='none';
	}
}

function ShowNavi(ShowId){     
  if (ShowId==''){       
	  return
	}
	else{	  	
    ShowId.style.display='';
	}
}