var nn4 = (document.layers) ? true : false
var ie = (document.all) ? true : false
var dom = (document.getElementById && !document.all) ? true : false

function browser(id){
  if(nn4) {
  path = document.layers[id]
  }
  else if(ie) {
  path = document.all[id]
  } 
  else {
  path = document.getElementById(id)
  }
return path  //return the path to the css layer depending on which browser is looking at the page
}