var xmlHttp
function getStanzas(poem,version,divID,highlight){xmlHttp=GetXmlHttpObject()
if(xmlHttp==null){alert("Browser does not support HTTP Request")
return}
var div=document.getElementById(divID)
var url="get-stanzas.php"
url=url+"?poem="+ poem+"&version="+ version+"&id="+ divID+"&highlighting="+ highlight
xmlHttp.onreadystatechange=function(){if(xmlHttp.readyState==4||xmlHttp.readyState=="complete"){div.innerHTML=xmlHttp.responseText}}
xmlHttp.open("GET",url,true)
xmlHttp.send(null)}
function GetXmlHttpObject(){var xmlHttp=null;try{xmlHttp=new XMLHttpRequest();}
catch(e){try{xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");}
catch(e){xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");}}
return xmlHttp;}
function reloadPage(form){var url=location.pathname
var poem=form.poem.value
var version=form.version.value
url=url+"?poem="+ poem+"&version="+ version
if(form.checkbox.checked){url=url+"&highlighting=on"}
else{url=url}
location.href=url}
function setForm(form){var url=location.href
var pattern=/(.)*highlighting=on(.)*/if(pattern.test(url)){form.checkbox.checked=true}
else{form.checkbox.checked=false}}
window.onload=function(){setForm(document.highlighting)}
function hideStanzas(poem,version,divID){var div=document.getElementById(divID)
div.innerHTML='<div class="button"><button onclick="getStanzas(\''+ poem+'\', \''+ version+'\', \''+ divID+'\', document.highlighting.checkbox.checked);">compare</button></div>';}