//*******************************************************
//	CREATE AJAX PROTOTYPE
//*******************************************************
opera_nav = (navigator.userAgent.indexOf('Opera') != -1) ? true : false;
ie_nav = (navigator.userAgent.indexOf('MSIE') != -1 && !opera_nav) ? true : false;
mozilla_nav = (navigator.userAgent.indexOf('Gecko') != -1) ? true : false;

AJAX = function() {
	this.data = "";
	this.keyStr;
	this.keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789+/=";
	this.displayDiv;
	this.displayDiv = "";
	this.returnData;
	this.returnData = "";
	this.isLoading = true;
	this.isLoading = true;	
};// AJAX function

AJAX.prototype = {

    convertParams: function(hash) {
        var res = [];
        for(k in hash) {
            res.push(k + "=" + encodeURIComponent(hash[k]));
        }
        return res.join("&");
    },
	
	sendrequest: function (method, page, param, callBack, div) {
		var http 	= new AJAXObject();
		var req 	= http.AjaxObject();
		var params 	= this.convertParams(param);
		if(method == "") { method = "GET"; }
		
		req.onreadystatechange = function(){
			
			if (req.readyState == 4) {
				//alert(req.responseText+'____'+req.status);
				if ((req.status < 400) && req.responseText) {
					//alert('got resp');
					if(div == "") {
						var json = req.responseText.substring(req.responseText.indexOf('{'),req.responseText.lastIndexOf('}')+1);
						//alert(json);
						var res = eval(callBack + '(' + json + ');');
						
					} else {
						if(typeof(div) == 'object') {
							div.innerHTML = req.responseText;
						} else {
							document.getElementById(div).innerHTML = req.responseText;
						}
					}
				}//if
			}//if
		}//req.onreadystatechange()
		
		if(method == "POST") {
			req.open("POST", page, true);
			//req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8;');
			req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8;'); // form file
			req.send(params);
		}
		else if(method == "GET") {
			req.open("GET", page + "?" + this.convertParams(param), true);
			req.send(null);
			
		}		
		
		
	},
	
	
	
	base64_encode : function(inp){
		var out = ""; //This is the output
		var chr1, chr2, chr3 = ""; //These are the 3 bytes to be encoded
		var enc1, enc2, enc3, enc4 = ""; //These are the 4 encoded bytes
		var i = 0; //Position counter
		do { //Set up the loop here
		chr1 = inp.charCodeAt(i++); //Grab the first byte
		chr2 = inp.charCodeAt(i++); //Grab the second byte
		chr3 = inp.charCodeAt(i++); //Grab the third byte
		//Here is the actual base64 encode part.
		//There really is only one way to do it.
		enc1 = chr1 >> 2;
		enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
		enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
		enc4 = chr3 & 63;
		
		if (isNaN(chr2)) {
		enc3 = enc4 = 64;
		} else if (isNaN(chr3)) {
		enc4 = 64;
		}
		//Lets spit out the 4 encoded bytes
		out = out + this.keyStr.charAt(enc1) + this.keyStr.charAt(enc2) + this.keyStr.charAt(enc3) +
		this.keyStr.charAt(enc4);
		// OK, now clean out the variables used.
		chr1 = chr2 = chr3 = "";
		enc1 = enc2 = enc3 = enc4 = "";
		} while (i < inp.length); //And finish off the loop
		//Now return the encoded values.
		return out;
	},
		
	//Heres the decode function
	base64_decode : function(inp){
		var out = ""; //This is the output
		var chr1, chr2, chr3 = ""; //These are the 3 decoded bytes
		var enc1, enc2, enc3, enc4 = ""; //These are the 4 bytes to be decoded
		var i = 0; //Position counter
		// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
		var base64test = /[^A-Za-z0-9\+\/\=]/g;
		if (base64test.exec(inp)) { //Do some error checking
		alert("There were invalid base64 characters in the input text.\n" +
		"Valid base64 characters are A-Z, a-z, 0-9, ?+?, ?/?, and ?=?\n" +
		"Expect errors in decoding.");
		}
		inp = inp.replace(/[^A-Za-z0-9\+\/\=]/g, "");
		do { //Heres the decode loop.
		//Grab 4 bytes of encoded content.
		enc1 = this.keyStr.indexOf(inp.charAt(i++));
		enc2 = this.keyStr.indexOf(inp.charAt(i++));
		enc3 = this.keyStr.indexOf(inp.charAt(i++));
		enc4 = this.keyStr.indexOf(inp.charAt(i++));
		//Heres the decode part. Theres really only one way to do it.
		chr1 = (enc1 << 2) | (enc2 >> 4);
		chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
		chr3 = ((enc3 & 3) << 6) | enc4;
		//Start to output decoded content
		out = out + String.fromCharCode(chr1);
		if (enc3 != 64) {
		out = out + String.fromCharCode(chr2);
		}
		if (enc4 != 64) {
		out = out + String.fromCharCode(chr3);
		}
		//now clean out the variables used
		chr1 = chr2 = chr3 = "";
		enc1 = enc2 = enc3 = enc4 = "";
		} while (i < inp.length); //finish off the loop
		//Now return the decoded values.
		return out;
	}//end function
	
	
}//AJAX.prototype

var ajax = new AJAX();





//*******************************************************
//	CREATE AJAX OBJECT PROTOTYPE
//*******************************************************
AJAXObject = function()
{};

AJAXObject.prototype = {
	AjaxObject:function()
	{ 
		var mr_xmlhttp;
		
		if(window.XMLHttpRequest)
		{ 
			mr_xmlhttp = new XMLHttpRequest(); 
		} 
		else if (window.ActiveXObject)
		{ 
			mr_xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
			if (!mr_xmlhttp)
			{ 
				mr_xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
			} 
		} 
		return mr_xmlhttp; 
	}
}