/*jslb_ajax050 2.652k @see http://jsgt.org/mt/archives/01/000409.html*/

function chkAjaBrowser() {
	var a, ua = navigator.userAgent;
	this.bw = {	safari:((a=ua.split('AppleWebKit/')[1])?a.split('(')[0]:0)>=124,
				konqueror:((a=ua.split('Konqueror/')[1])?a.split(';')[0]:0)>=3.3,
				mozes:((a=ua.split('Gecko/')[1])?a.split(" ")[0]:0)>=20011128,
				opera:(!!window.opera)&&((typeof XMLHttpRequest)=='function'),
				msie:(!!window.ActiveXObject)?(!!createHttpRequest()):false
				};
	return(this.bw.safari||this.bw.konqueror||this.bw.mozes||this.bw.opera||this.bw.msie);
}
function createHttpRequest() {
	if(window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		try{
			return new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try{
				return new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e2) {
				return null;
			}
		}
	} else {
		return null;
	}
}
function sendRequest(callback, data, method, url, async, sload, user, password) {
	sendRequest.prototype.README = {url:"http://jsgt.org/mt/archives/01/000409.html",
									name:"sendRequest",
									version:0.50,
									license:"Public Domain",
									author:"Toshiro Takahashi http://jsgt.org/mt/01/",
									memo:""
									};
	var oj = createHttpRequest();
	if(oj == null) return null;
	
	var sload = (!!sendRequest.arguments[5])? sload : false;
	if(sload || method.toUpperCase()=='GET') url += "?";
	if(sload) url = url + "t=" + (new Date()).getTime();
	
	var bwoj = new chkAjaBrowser();
	var opera = bwoj.bw.opera;
	var safari = bwoj.bw.safari;
	var konqueror = bwoj.bw.konqueror;
	var mozes = bwoj.bw.mozes;
	if(typeof callback=='object') {
		var callback_onload = callback.onload;
		var callback_onbeforsetheader = callback.onbeforsetheader;
	} else {
		var callback_onload = callback;
		var callback_onbeforsetheader = null;
	}
	if(opera||safari||mozes) {
		oj.onload = function(){
						callback_onload(oj);
					}
	} else {
		oj.onreadystatechange = function() {
									if(oj.readyState==4) {
										callback_onload(oj);
									}
								}
	}
	
	data = uriEncode(data,url);
	if(method.toUpperCase()=='GET') {url += data};
	
	oj.open(method,url,async,user,password);
	if(!!callback_onbeforsetheader) callback_onbeforsetheader(oj);
	
	setEncHeader(oj);
	oj.send(data);
	
	function setEncHeader(oj) {
		var contentTypeUrlenc = 'application/x-www-form-urlencoded; charset=UTF-8';
		if(!window.opera) {
			oj.setRequestHeader('Content-Type',contentTypeUrlenc);
		} else {
			if((typeof oj.setRequestHeader)=='function') oj.setRequestHeader('Content-Type',contentTypeUrlenc);
		}
		return oj;
	}
	function uriEncode(data,url) {
		var encdata = (url.indexOf('?')==-1)? '?dmy' : '';
		if(typeof data=='object') {
			for(var i in data) encdata += '&' + encodeURIComponent(i) + '=' + encodeURIComponent(data[i]);
		} else if(typeof data=='string') {
			if(data=="") return"";
			
			var encdata ='';
			var datas = data.split('&');
			for(i=1;i<datas.length;i++) {
				var dataq = datas[i].split('=');
				encdata += '&' + encodeURIComponent(dataq[0]) + '=' + encodeURIComponent(dataq[1]);
			}
		}
		return encdata;
	}
	
	return oj;
}