var htmlFileArray = new Array() // do not change this

htmlFileArray[0] = 'html/file1.htm'
htmlFileArray[1] = 'html/file2.htm'
htmlFileArray[2] = 'html/file3.htm'
htmlFileArray[3] = 'html/file4.htm'

function randomHtml(id) {
	var index = Math.round(Math.random()*(htmlFileArray.length-1))
	var url = htmlFileArray[index];
	var req = false;
	// For Safari, Firefox, and other non-MS browsers
	if (window.XMLHttpRequest) {
		try {
			req = new XMLHttpRequest();
		} catch (e) {
			req = false;
		}
	} else if (window.ActiveXObject) {
	// For Internet Explorer on Windows
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				req = false;
			}
		}
	}
	var element = document.getElementById(id);
	if (!element) {
		alert("Bad id " + id + "passed to randomHtml." +
		"You need a div or span element with this id in your page.");
		return;
	}
	if (req) {
		// Synchronous request, wait till we have it all
		req.open('GET', url, false);
		req.send(null);
		element.innerHTML = req.responseText;
	} else {
		element.innerHTML = "Sorry, your browser does not support " +
		"XMLHTTPRequest objects. This page requires " +
		"Internet Explorer 5 or better for Windows, " +
		"or Firefox for any system, or Safari. Other " +
		"compatible browsers may also exist.";
	}
}