//V2.1 - Based on http://www.openjs.com/scripts/jx/ - released under BSD license// 2.1 version by Chris Maunder (www.codeproject.com) //  - use XMLHttpRequest as 1st priority + use window.XMLHttpRequest in test, allow loading //    indicator to be specified. Also added '$'. Added custom error handler. Added optional //    load parameters removed bind methodjx = {	http:false, //HTTP Object	format:'text',	callback:function(data){},	indicator:false,	customError:false,	customhandler:false,	$: function(id) {return document.getElementById(id);},	error: function(code){alert('An error occurred (status '+code.toString()+')')},	//Create a xmlHttpRequest object - this is the constructor. 	getHTTPObject : function() {		var http = false;		if (window.XMLHttpRequest) {			try {http = new XMLHttpRequest();}			catch (e) {http = false;}		} else	if(typeof ActiveXObject != 'undefined') {			try {http = new ActiveXObject("Msxml2.XMLHTTP");}			catch (e) {				try {http = new ActiveXObject("Microsoft.XMLHTTP");}				catch (E) {http = false;}			}		}		return http;	},	// This function is called from the user's script. 	//Arguments - 	//	url	- The url of the serverside script that is to be called. Append all the arguments to 	//			this url - eg. 'get_data.php?id=5&car=benz'	//	callback - Function that must be called once the data is ready.	//  loadingId - id of 'loading' HTML element to be displayed	//  errCallback - custom error callback	//	format - The return type for this function. Could be 'xml','json' or 'text'. If it is json, 	//			the string will be 'eval'ed before returning it. Default:'text'	//	method - GET or POST. Default 'GET'	//  customHandler - custom error callback	load : function (url,callback /*,loadingId,errCallback,format,method,customHandler*/) {		var method='GET';		var format='text';		this.init(); //The XMLHttpRequest object is recreated at every call - to defeat Cache problem in IE		if(!this.http||!url) return;		//XML Format need this for some Mozilla Browsers		if (this.http.overrideMimeType) this.http.overrideMimeType('text/xml');		this.callback=callback;		if(arguments[2])this.indicator=this.$(arguments[2]);		if(arguments[3])this.customError=arguments[3];		if(arguments[4])method = arguments[4].toUpperCase();		if(arguments[5])format = arguments[5].toLowerCase();		if(arguments[6])this;customhandler = arguments[6]		var ths = this; //Closure		var now = "cache-bust=" + new Date().getTime(); // IE cache kill		url += (url.indexOf("?")+1) ? "&" : "?";		url += now;		var parameters = null;		if(method=="POST") {			var parts = url.split("\?");			url = parts[0];			parameters = parts[1];		}		this.http.open(method, url, true);		if(method=="POST") {			this.http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");			this.http.setRequestHeader("Content-length", parameters.length);			this.http.setRequestHeader("Connection", "close");		}		if(this.customhandler) { //If a custom handler is defined, use it			this.http.onreadystatechange = this.customhandler;		} else {			this.http.onreadystatechange = function () {				if(!ths) return;				var http = ths.http;				if (ths.indicator)ths.indicator.style.display='';				if (http.readyState == 4) {//4 = document loaded.					if (ths.indicator)ths.indicator.style.display='none';					if(http.status == 200||http.status==0) {						var result = "";						if(http.responseText) result = http.responseText;						if(ths.format.charAt(0) == "j") { // JSON -> eval result first							result = result.replace(/[\n\r]/g,""); //\n's in JSON string cause errors in IE							result = eval('('+result+')');						} else if(ths.format.charAt(0) == "x") { //XML							result = http.responseXML;						}						if(ths.callback) ths.callback(result); // process					} else {											if(ths.customError)ths.customError(http.status); else ths.error(http.status);					}				}			}		}		this.http.send(parameters);	},	init : function() {this.http = this.getHTTPObject();}}