var xmlHttp;

function getArtist(artistName) {
  try {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    } catch (e) {
    // Internet Explorer
    try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
      try {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function() {
      if(xmlHttp.readyState==4) {
//      	alert(xmlHttp.responseText);
        document.getElementById("preamble").innerHTML=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET","/gallery/expose_wrapper.shtml?" + "file=xml/expose_" + artistName + ".xml" ,true);
    xmlHttp.send(null);
  }

function getArtistAlbum(artistName, albumNumber) {
  try {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    } catch (e) {
    // Internet Explorer
    try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
      try {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function() {
      if(xmlHttp.readyState==4) {
//              alert(xmlHttp.responseText);
        document.getElementById("preamble").innerHTML=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET","/gallery/expose_wrapper.shtml?" + "file=xml/expose_" + artistName + ".xml&album=" + albumNumber ,true);
    xmlHttp.send(null);
  }
  
function getContent(pageName) {
  try {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    } catch (e) {
    // Internet Explorer
    try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
      try {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function() {
      if(xmlHttp.readyState==4) {
        document.getElementById("preamble").innerHTML=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET", pageName ,true);
    xmlHttp.send(null);
  }