function makeRequest(url) {

	var http_request = false;

	if (window.XMLHttpRequest) {
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) {
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!http_request) {
		return false;
	}
	http_request.onreadystatechange = function() { alertContents(http_request); };
	http_request.open('GET', url, true);
	http_request.send(null);
	return false;
}

function alertContents(http_request) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			document.getElementById("info").innerHTML = http_request.responseText;
		}
	}
}

function getsize() {
	var cdesign = document.getElementById("design").value;
	if (document.getElementById("colour1")) {	
		var cone = document.getElementById("colour1");
		var ccone = cone.options[cone.selectedIndex].value;
	}
	if (document.getElementById("colour2")) {
		var ctwo = document.getElementById("colour2");
		var cctwo = ctwo.options[ctwo.selectedIndex].value;
	}
	if (document.getElementById("colour3")) {
		var cthree = document.getElementById("colour3");
		var ccthree = cthree.options[cthree.selectedIndex].value;
	}
	if (document.getElementById("colour4")) {
		var cfour = document.getElementById("colour4");
		var ccfour = cfour.options[cfour.selectedIndex].value;
	}
	if (document.getElementById("colour5")) {
		var cfive = document.getElementById("colour5");
		var ccfive = cfive.options[cfive.selectedIndex].value;
	}
	var ctype = document.getElementById("type");
	var cctype = ctype.options[ctype.selectedIndex].text;
	
	if (document.getElementById("size")) {
		var csize = document.getElementById("size");
		var ccsize = csize.options[csize.selectedIndex].text;
	} else {
		var csize = document.getElementById("singlesize");
		var ccsize = csize.value;
	}
	var get = "poles.php?action=info&design="+cdesign+"&colour1="+ccone+"&colour2="+cctwo+"&colour3="+ccthree+"&type="+cctype+"&size="+ccsize;
	if (cfour != undefined)	{
		get = get + "&colour4=" + ccfour;
	}
	if (cfive != undefined)	{
		get = get + "&colour5=" + ccfive;
	}
	//alert(get);
	makeRequest(get);
}