// JavaScript Document
function show(param){

  if (document.all){
    document.all[param].style.visibility = "visible"

  } else if (document.layers){
    document.param.style.visibility = "visible"

  } else if (document.getElementById){
    document.getElementById(param).style.visibility = "visible"

  }

}

function hide(param){
  if (document.all){
    document.all[param].style.visibility = "hidden"

  } else if (document.layers){
    document.param.style.visibility = "hidden"

  } else if (document.getElementById){
    document.getElementById(param).style.visibility = "hidden"

  }
}