// Ajax Connection code

var http_request = false;
var int_previousBoxId = 1;

function makeRequest(url) {

	http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
			// See note below about this line
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	http_request.onreadystatechange = processRepsonse;
	http_request.open('GET', url, true);
	http_request.send(null);

}

function processRepsonse() {

	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			var xmldoc = http_request.responseXML;
			var num_pageItems = xmldoc.getElementsByTagName('box').length - 1;
			for (var i = 0; i <= num_pageItems; i++) {
				var intBoxId = xmldoc.getElementsByTagName('id').item(i).firstChild.data;
				var str_URLtext = xmldoc.getElementsByTagName('urlText').item(i).firstChild.data;
				var str_URL = xmldoc.getElementsByTagName('url').item(i).firstChild.data;
				var str_image = xmldoc.getElementsByTagName('image').item(i).firstChild.data;
				document.getElementById('HomeBoxLink').innerHTML = '<a href="'+str_URL+'">'+str_URLtext+'</a>';
				//reset previous box
				document.getElementById('HomeBox'+int_previousBoxId).className = 'HomeBox';
				document.getElementById('HomeBox'+intBoxId).className = 'HomeBoxSelected';
				if (str_image != 'undefined')
					document.getElementById('DivBoxBg').style.backgroundImage = 'url('+str_image+')';
				int_previousBoxId = intBoxId;
			}
		} else {
			alert('There was a problem with the request.');
		}
	}

}