//  AUTHER      :  Toshirou Takahashi http://jsgt.org/mt/01/

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){

		var GET=method.toUpperCase()=='GET',
		oj = createHttpRequest();
		if( oj == null ) return null;

		if((sload)?sload:false)url +=((url.indexOf('?')==-1)?'?':'&')+'t='+(new Date()).getTime();

		var bwoj = new chkAjaBrowser(),
		o  = bwoj.bw.opera,
		s  = bwoj.bw.safari,
		k = bwoj.bw.konqueror,
		m  = 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(o || s || m){
			oj.onload = function () { callback_onload(oj);oj.abort(); }
		} else {
		
			oj.onreadystatechange =function () 
			{
				if ( oj.readyState == 4 ){
					callback_onload(oj);oj.abort();
				}
			}
		}

		data = uriEncode(data,url);
		if(GET) {
			url += ((url.indexOf('?')==-1)?'?':(data=='')?'':'&')+data;
		}

		oj.open(method,url,async,user,password);

		if(!!callback_onbeforsetheader)callback_onbeforsetheader(oj);

		setEncHeader(oj);

		oj.send(data);

		function setEncHeader(oj){
	
			if(!o||typeof oj.setRequestHeader == 'function'){
				oj.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
			}
			return oj;
		}


		function uriEncode(data,url){
			var d = [];
			if(typeof data=='object'){
				for(var i in data)p(i,data[i]);
			} else if(typeof data=='string'){
				if(data=='')return '';
				if(data.charAt(0)=='&')data=data.substring(1,data.length)
				var datas = data.split('&');
				for(var i=0;i<datas.length;i++)
				{
					var dataq = datas[i].split('=');
					p(dataq[0],dataq[1]);
				}
			} 
			function p(k,v){d.push( encodeURIComponent(k) + "=" + encodeURIComponent(v))};
			return d.join("&");
		}

		return oj;
}