http://badakencoder.com/home/js/ajax.js

1var g_BrowserType = getBrowserType();
2
3function getBrowserType()
4{
5    var ua = navigator.userAgent;
6
7    if(ua.split('AppleWebKit/')[1])
8        return "safari";
9    else if(ua.split('Konqueror/')[1])
10        return "konqueror";
11    else if(ua.split('Gecko/')[1])
12        return "gecko";
13    else if (!!window.opera && (typeof XMLHttpRequest) == 'function')
14        return "opera";
15    else if (!!window.ActiveXObject)
16        return "msie";
17    else 
18        return "unknown";
19
20}
21
22function checkAjaxBrowser()
23{
24	var a, ua = navigator.userAgent;
25
26	this.bw = 
27	{
28		safari : ((a=ua.split('AppleWebKit/')[1]) ? a.split('(')[0]:0) >=124,
29		konqueror : ((a=ua.split('Konqueror/')[1]) ? a.split('(')[0]:0) >=124,
30		mozes : ((a=ua.split('Gecko/')[1]) ? a.split('(')[0]:0) >=124,
31		opera : (!!window.opera) && ((typeof XMLHttpRequest) == 'function'),
32		msie : (!!window.ActiveXObject) ? (!!createHttpRequest()) : false
33	}
34
35	return (this.bw.safari || this.bw.konqueror || this.bw.mozes || this.bw.opera || this.bw.msie);
36}
37
38function createHttpRequest()
39{
40	if(window.ActiveXObject)
41	{
42		try
43		{
44			return new ActiveObject("Msxml2.XMLHTTP");
45		}
46		catch(e)
47		{
48			try
49			{
50				return new ActiveXObject("Microsoft.XMLHTTP");
51			}
52			catch(e2)
53			{
54				return null;
55			}
56		}
57	}
58	else if(window.XMLHttpRequest)
59	{
60		return new XMLHttpRequest();
61	}
62	else
63		return null;
64}
65
66function sendRequest(callback, data, method, url, async, sload, user, password)
67{
68	var oj = createHttpRequest();
69
70	if(oj == null)
71		return null;
72
73	var sload = (!!sendRequest.arguments[5]) ? sload:false;
74	if(sload || method.toUpperCase() == 'GET')
75		url += "?";
76	if(sload)
77		url = url + "t=" + (new Date()).getTime();
78
79	var bwoj = new checkAjaxBrowser();
80
81	var opera = bwoj.bw.opera;
82	var safari = bwoj.bw.safari;
83	var konqueror = bwoj.bw.konqueror;
84	var mozes = bwoj.bw.mozes;
85		
86	if(opera || safari || mozes)
87	{
88		oj.onload = function()
89		{
90			callback(oj);
91		}
92	}	
93	else
94	{
95		oj.onreadystatechange = function()
96		{
97			if(oj.readyState == 4)
98			{
99				callback(oj);
100			}
101		}
102	}
103
104	data = uriEncode(data);
105
106	if(method.toUpperCase() == 'GET')
107		url += data;
108
109	oj.open(method, url, async, user, password);
110	setEncHeader(oj);
111	oj.send(data);
112
113	function setEncHeader(oj)
114	{
115		//var contentTypeUrlenc = 'application/x-www-form-urlencoded; charset=UTF-8';
116		var contentTypeUrlenc = 'application/x-www-form-urlencoded';
117		//var contentTypeUrlenc = 'application/x-www-form-urlencoded;charset=euc-kr';
118		if(!window.opera)
119		{
120			oj.setRequestHeader('Content-Type', contentTypeUrlenc);
121		}
122		else
123		{
124			if((typeof oj.setRequestHeader) == 'function')
125			{
126				oj.setRequestHeader('Content-Type', contentTypeUrlenc);
127			}
128		}
129		return oj;
130	}
131
132	function uriEncode(data)
133	{
134		if(data != '')
135		{
136			var encdata = '';
137			var datas = data.split('&');
138
139			for(i = 1; i < datas.length; i++)
140			{
141				var dataq = datas[i].split('=');
142				encdata += '&' + encodeURIComponent(dataq[0]) + '=' + encodeURIComponent(dataq[1]);
143			}
144		}
145		else
146		{
147			encdata = '';
148		}
149		return encdata;
150	}
151
152	return oj;
153}