var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var bns4 = (bName == "Netscape" && bVer >= 4);
var bie4 = (bName == "Microsoft Internet Explorer" && bVer >= 4);


function change_text(id,text) {
  if (bns4) {
    document.getElementById(id).innerHTML = text;
  }
 if (bie4) {
	  document.all[id].innerHTML = text;
  }
  
}

function show(id) {
        if (bns4) document.getElementById(id).style.visibility = "visible"
        else if (bie4) document.all[id].style.visibility = "visible"
}

function hide(id) {
        if (bns4) document.getElementById(id).style.visibility = "hidden"
        else if (bie4) document.all[id].style.visibility = "hidden"
}