function ajaxObject(url, callbackFunction) {  
var that=this;        
this.updating = false;  
this.abort = function() {    
if (that.updating) {      
that.updating=false;      
that.AJAX.abort();      
that.AJAX=null;    
}  
}  
this.update = function(passData,postMethod) {     
if (that.updating) { 
return false; 
}    
that.AJAX = null;                              
if (window.XMLHttpRequest) {                    
that.AJAX=new XMLHttpRequest();                  
} else {                                        
that.AJAX=new ActiveXObject("Microsoft.XMLHTTP");    
}                                                 
if (that.AJAX==null) {                                   
return false;                                   
} else {      
that.AJAX.onreadystatechange = function() {          
if (that.AJAX.readyState==4) {                       
that.updating=false;                          
that.callback(that.AJAX.responseText,that.AJAX.status,that.AJAX.responseXML);                  
that.AJAX=null;                                                 
}
}                                                              
that.updating = new Date();                                    
if (/post/i.test(postMethod)) {        
var uri=urlCall+'?'+that.updating.getTime();        
that.AJAX.open("POST", uri, true);        
that.AJAX.setRequestHeader("Content-type", "application/x-www-form-urlencoded");        
that.AJAX.setRequestHeader("Content-Length", passData.length);        
that.AJAX.send(passData);      } 
else {        
var uri=urlCall+'?'+passData+'&timestamp='+(that.updating.getTime());         
that.AJAX.open("GET", uri, true);                                     
that.AJAX.send(null);                                               
}                    
return true;
}                                                                             
}  
var urlCall = url;          
this.callback = callbackFunction || function () { 
};
}
var Utf8 = {

    // public method for url encoding
    encode : function (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // public method for url decoding
    decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}