var ajaxObj = new Array();

var isIE = false;



function ajax(HX){

    

    this.xmlhttp;

    this.formElement;

    this.requestFile;

    this.URLString;

    this.innerDivID;

    this.method = 'GET';

    this.responseType = 'Text'; /*Text , XML*/

    this.loadingType    = 0;

    this.async = true;

    this.onCompletion   = function() { };

    this.onProcess = function() { };

    this.loading = function(v){

        var v;

        if(this.loadingType>0){

            if(this.loadingType==1){

                if(!g("loading")) {this.createLoaddingDiv();}

            }

            if(v==1){

                if(this.loadingType==1){ g("loading").style.visibility = "visible";}

            }else{

                if(this.loadingType==1){ g("loading").style.visibility = "hidden";}

            }

        }

    }

    

    this.ConnXmlHttp = function(){

        try{

            xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

        }catch(e){

            try{

                isIE = true;

                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

            }catch(e){

                xmlhttp = false;

            }

        }

    

        if(!xmlhttp && document.createElement){

            xmlhttp = new XMLHttpRequest();

        }

        

        return xmlhttp;

    }

    

    this.getRequestBody = function(myForm) {

        var aParams = new Array();  

            for (var i=0 ; i < myForm.elements.length; i++) {

                

                var formElement = myForm.elements[i];

                if(formElement.type=='checkbox' && !formElement.checked){ continue;} 

                var sParam = encodeURIComponent(myForm.elements[i].name);

                sParam += "=";

                sParam += encodeURIComponent(myForm.elements[i].value);

                aParams.push(sParam);

            }     

            return aParams.join("&");        

    }

    

    this.loadXMLDoc = function() {

    

        var self = this;

        this.xmlhttp = this.ConnXmlHttp();



        

        if (this.method == "GET") {

            this.xmlhttp.open(this.method, this.requestFile, this.async);

        }else{

            this.URLString = this.getRequestBody(this.formElement);

            this.xmlhttp.open(this.method,this.requestFile, this.async);

        }

        if (this.method == "POST"){

            try {

                this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  

            } catch (e) {}

        }

        this.xmlhttp.onreadystatechange = function(){

            if(self.xmlhttp.readyState==4){

                if(self.loadingType==1){ self.loading(0);}

                if (self.xmlhttp.status == 200) {

                    if(self.responseType == "Text"){

                        self.response = self.xmlhttp.responseText;

                    }else{

                        self.response = self.xmlhttp.responseXML;

                    }   

                    

                    self.onCompletion();

                }

            }else{

                if(self.loadingType==1){ self.loading(1);}

                if(self.loadingType==2){ 

                    self.response = "<TABLE height='"+HX+"' width='100%' align='center' border=0><TR><TD valign='middle' align='center' width='100%' height='100%'><IMG SRC='_icon/loading.gif' BORDER='0' ALT='กรุณารอ..'></TD></TR></TABLE>";

                    self.onCompletion();

                }

            }

        }

        this.xmlhttp.send(this.URLString);

    }

    

    /*

    * Show Loading

    */

    

    this.createLoaddingDiv = function(){

    

        var connLoading = document.createElement("DIV")

            connLoading.id = "loading";

            connLoading.style.position="absolute";

            connLoading.style.left="0px";

            connLoading.style.top="0px";

            connLoading.style.width="185px";

            connLoading.style.height="15px";

            connLoading.style.zIndex=99999;

            connLoading.style.backgroundColor="#FF0000";

            connLoading.style.visibility = "visible";

            connLoading.style.font = '11px Lucida Sans Unicode';

            connLoading.style.filter = 'alpha(opacity=60)';

            connLoading.innerHTML = "<strong><font color=\"#FFFFFF\">&nbsp;working on your request...</font></strong>";

        document.body.appendChild(connLoading);

        

    }

}