function ShowHide(id) {
    obj = document.getElementsByTagName("div");
    if (obj[id].style.display == 'block'){
    //if (obj[id].style.visibility == 'visible'){
  	   obj[id].style.display = 'none';
    	
  	   //obj[id].style.visibility = 'hidden';
    }
    else {
 	   obj[id].style.display = 'block';
 	   //obj[id].style.visibility = 'visible';
    }
}