//Basic Ajax Routine- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Last updated: Jan 15th, 06'

function createAjaxObj(){
	var httprequest = false

	if (window.XMLHttpRequest){ // if Mozilla, Safari etc
		httprequest = new XMLHttpRequest()

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

var ajaxpack = new Object()
ajaxpack.basedomain = "http://"+window.location.hostname
ajaxpack.ajaxobj = createAjaxObj()
ajaxpack.filetype = "txt"
ajaxpack.addrandomnumber = 0 //Set to 1 or 0. See documentation.

ajaxpack.getAjaxRequest = function(url, parameters, callbackfunc, filetype){
	ajaxpack.ajaxobj = createAjaxObj() //recreate ajax object to defeat cache problem in IE
	if (ajaxpack.addrandomnumber==1) //Further defeat caching problem in IE?
	var parameters = parameters+"&ajaxcachebust="+new Date().getTime()

	if (this.ajaxobj){
		this.filetype = filetype
		this.ajaxobj.onreadystatechange = callbackfunc
		this.ajaxobj.open('GET', url+"?"+parameters, true)
		this.ajaxobj.send(null)
	}
}

ajaxpack.postAjaxRequest = function(url, parameters, callbackfunc, filetype){
	ajaxpack.ajaxobj=createAjaxObj() //recreate ajax object to defeat cache problem in IE
	if (this.ajaxobj){
		this.filetype = filetype
		this.ajaxobj.onreadystatechange = callbackfunc;
		this.ajaxobj.open('POST', url, true);
		this.ajaxobj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		this.ajaxobj.setRequestHeader("Content-length", parameters.length);
		this.ajaxobj.setRequestHeader("Connection", "close");
		this.ajaxobj.send(parameters);
	}
}