function hideClass(objClass){
//  This function will hide Elements by object Class
//  Works with IE and Mozilla based browsers

var elements = (ie) ? document.all : document.getElementsByTagName('*');
  var classRx = new RegExp('\\b'+objClass+'\\b');
  for (i=0; i<elements.length; i++){
    if (classRx.test (elements[i].className)){
      elements[i].style.display="none"
    }
  }
}

function showClass(objClass){
//  This function will show Elements by object Class
//  Works with IE and Mozilla based browsers
var elements = (ie) ? document.all : document.getElementsByTagName('*');
  var classRx = new RegExp('\\b'+objClass+'\\b');
  for (i=0; i<elements.length; i++){
    if (classRx.test (elements[i].className)){
      //elements[i].style.display="block"
      elements[i].style.display=""
    }
  }
}