var xmlHttp;

function createXMLHttpRequest() {
	if (window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} else if (window.XMLHttpRequest) {
		xmlHttp = new XMLHttpRequest();
	}
}

function getDescription(cid) {
	createXMLHttpRequest();
	var dbox = document.getElementById("prod_cat_description");
	var url = "xml_catdescription.php?cid=" + cid;
	xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = callback;
	xmlHttp.send(null);
}

function callback() {
	if (xmlHttp.readyState == 4) {
		if (xmlHttp.status == 200) {
			var mes = "";
			mes = xmlHttp.responseXML.getElementsByTagName("description")[0].firstChild.data;
			setMessage(mes);
		}
	}
}

function clearMessage() {
	var messageArea = document.getElementById("prod_cat_description");
	messageArea.innerHTML = "";
	messageArea.setAttribute("style", "display: none;");
	messageArea.style.cssText = "display: none;";
}

function setMessage(message) {
	var messageArea = document.getElementById("prod_cat_description");
	messageArea.setAttribute("style", "display: block;");
	messageArea.style.cssText = "display: block;";
	messageArea.innerHTML = "<p style=\"margin: 0; padding: 0;\">" + message + "</p>";
}