// Casestudies Load Script
function loadExternalHTMLPage() { 
var xmlhttp; 
var pagesToDisplay = ['/casestudies/casestudy1.html', '/casestudies/casestudy2.html', '/casestudies/casestudy3.html', '/casestudies/casestudy4.html', '/casestudies/casestudy5.html', '/casestudies/casestudy6.html', '/casestudies/casestudy7.html', '/casestudies/casestudy8.html', '/casestudies/casestudy9.html', '/casestudies/casestudy10.html', '/casestudies/casestudy11.html', '/casestudies/casestudy12.html', '/casestudies/casestudy13.html', '/casestudies/casestudy14.html', '/casestudies/casestudy15.html', '/casestudies/casestudy16.html', '/casestudies/casestudy17.html', '/casestudies/casestudy18.html', '/casestudies/casestudy19.html', '/casestudies/casestudy20.html', '/casestudies/casestudy21.html', '/casestudies/casestudy22.html']; 
if (window.XMLHttpRequest) { 
xmlhttp = new XMLHttpRequest(); 
} else { 
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); 
} 
xmlhttp.onreadystatechange = function () { 
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { 
document.getElementById("contentArea").innerHTML = xmlhttp.responseText; 
} 
} 
var randomnumber = Math.floor(Math.random() * pagesToDisplay.length); 
xmlhttp.open("GET", pagesToDisplay[randomnumber], true); 
xmlhttp.send(); 
}