// Wrapper function to get a cross browser XMLHttp object
/***************************************************************************************************************************/
function getXMLHTTP() {
	// function to create an XmlHttp object
	var xmlHttp = null;

	try {
		xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch(e) {
		try {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch(oc) {
			xmlHttp = null;
		}
	}

	if(!xmlHttp && typeof XMLHttpRequest != "undefined") {
		xmlHttp = new XMLHttpRequest();
	}

	return xmlHttp;
}
/***************************************************************************************************************************/



// QueryString function
/***************************************************************************************************************************/
function PageQuery(q) {
	if(q.length > 1) this.q = q.substring(1, q.length);
		else this.q = null;
	this.keyValuePairs = new Array();
	if(q) {
		for(var i=0; i < this.q.split("&").length; i++) {
			this.keyValuePairs[i] = this.q.split("&")[i].toLowerCase();
		}
	}

	this.getKeyValuePairs = function() { return this.keyValuePairs; }

	this.getValue = function(s) {
		for(var j=0; j < this.keyValuePairs.length; j++) {
			if(this.keyValuePairs[j].split("=")[0] == s)
			return this.keyValuePairs[j].split("=")[1];
		}
		return "";
	}

	this.getParameters = function() {
		var a = new Array(this.getLength());
		for(var j=0; j < this.keyValuePairs.length; j++) {
			a[j] = this.keyValuePairs[j].split("=")[0];
		}
		return a;
	}

	this.getLength = function() { return this.keyValuePairs.length; } 
}

function queryString(key){
	var page = new PageQuery(window.location.search); 
	return unescape(page.getValue(key.toLowerCase())); 
}
/***************************************************************************************************************************/



// Cookie functions
/***************************************************************************************************************************/
function getExpiryDate(minutes){
	var UTCstring;
	Today = new Date();
	nomilli = Date.parse(Today);
	Today.setTime(nomilli + (minutes * 60000));
	UTCstring = Today.toUTCString();
	return UTCstring;
}

function setCookie(name, value, duration){
	cookiestring = name + "=" + escape(value) + "; EXPIRES=" + getExpiryDate(duration);
	document.cookie = cookiestring;
}

function getCookie(cookiename) {
	var cookiestring = "" + document.cookie;
	var index1 = cookiestring.indexOf(cookiename);
	if (index1 == -1 || cookiename == "") return ""; 
	var index2 = cookiestring.indexOf(';', index1);
	if (index2 == -1) index2 = cookiestring.length; 
	return unescape(cookiestring.substring(index1 + cookiename.length + 1, index2));
}
/***************************************************************************************************************************/