// to swap CSS classes when you hover over an element for instance
function changeCSS(theId,newCSS) {
  getID(theId).className = newCSS;
}


// to get access to a 'layer' style for ie4 & up, nn4 & up and other getElementById browsers
function getStyle(layer) {
  if (document.getElementById) {
    return document.getElementById(layer).style
  } 
  else if(document.all) {
    return document.all[layer].style
  } 
  else {
    return document[layer]
  }
}

// to get access to a 'layer' for ie4 & up, nn4 & up and other getElementById browsers
function getID(layer) {
  if (document.getElementById) {
    return document.getElementById(layer)
  } 
  else if(document.all) {
    return document.all[layer]
  } 
  else {
    return document[layer]
  }
}