function AjaxRequest(){
var req=new Object();
req.timeout=null;
req.generateUniqueUrl=true;
req.url=window.location.href;
req.method="GET";
req.async=true;
req.username=null;
req.password=null;
req.parameters=new Object();
req.requestIndex=AjaxRequest.numAjaxRequests++;
req.responseReceived=false;
req.groupName=null;
req.queryString="";
req.responseText=null;
req.responseXML=null;
req.status=null;
req.statusText=null;
req.aborted=false;
req.xmlHttpRequest=null;
req.onTimeout=null;
req.onLoading=null;
req.onLoaded=null;
req.onInteractive=null;
req.onComplete=null;
req.onSuccess=null;
req.onError=null;
req.onGroupBegin=null;
req.onGroupEnd=null;
req.xmlHttpRequest=AjaxRequest.getXmlHttpRequest();
if(req.xmlHttpRequest==null){return null;}
req.xmlHttpRequest.onreadystatechange=
function(){
if(req==null||req.xmlHttpRequest==null){return;}
if(req.xmlHttpRequest.readyState==1){req.onLoadingInternal(req);}
if(req.xmlHttpRequest.readyState==2){req.onLoadedInternal(req);}
if(req.xmlHttpRequest.readyState==3){req.onInteractiveInternal(req);}
if(req.xmlHttpRequest.readyState==4){req.onCompleteInternal(req);}
};
req.onLoadingInternalHandled=false;
req.onLoadedInternalHandled=false;
req.onInteractiveInternalHandled=false;
req.onCompleteInternalHandled=false;
req.onLoadingInternal=
function(){
if(req.onLoadingInternalHandled){return;}
AjaxRequest.numActiveAjaxRequests++;
if(AjaxRequest.numActiveAjaxRequests==1&&typeof(window['AjaxRequestBegin'])=="function"){
AjaxRequestBegin();
}
if(req.groupName!=null){
if(typeof(AjaxRequest.numActiveAjaxGroupRequests[req.groupName])=="undefined"){
AjaxRequest.numActiveAjaxGroupRequests[req.groupName]=0;
}
AjaxRequest.numActiveAjaxGroupRequests[req.groupName]++;
if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==1&&typeof(req.onGroupBegin)=="function"){
req.onGroupBegin(req.groupName);
}
}
if(typeof(req.onLoading)=="function"){
req.onLoading(req);
}
req.onLoadingInternalHandled=true;
};
req.onLoadedInternal=
function(){
if(req.onLoadedInternalHandled){return;}
if(typeof(req.onLoaded)=="function"){
req.onLoaded(req);
}
req.onLoadedInternalHandled=true;
};
req.onInteractiveInternal=
function(){
if(req.onInteractiveInternalHandled){return;}
if(typeof(req.onInteractive)=="function"){
req.onInteractive(req);
}
req.onInteractiveInternalHandled=true;
};
req.onCompleteInternal=
function(){
if(req.onCompleteInternalHandled||req.aborted){return;}
req.onCompleteInternalHandled=true;
AjaxRequest.numActiveAjaxRequests--;
if(AjaxRequest.numActiveAjaxRequests==0&&typeof(window['AjaxRequestEnd'])=="function"){
AjaxRequestEnd(req.groupName);
}
if(req.groupName!=null){
AjaxRequest.numActiveAjaxGroupRequests[req.groupName]--;
if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==0&&typeof(req.onGroupEnd)=="function"){
req.onGroupEnd(req.groupName);
}
}
req.responseReceived=true;
req.status=req.xmlHttpRequest.status;
req.statusText=req.xmlHttpRequest.statusText;
req.responseText=req.xmlHttpRequest.responseText;
req.responseXML=req.xmlHttpRequest.responseXML;
if(typeof(req.onComplete)=="function"){
req.onComplete(req);
}
if(req.xmlHttpRequest.status==200&&typeof(req.onSuccess)=="function"){
req.onSuccess(req);
}
else if(typeof(req.onError)=="function"){
req.onError(req);
}
delete req.xmlHttpRequest['onreadystatechange'];
req.xmlHttpRequest=null;
};
req.onTimeoutInternal=
function(){
if(req!=null&&req.xmlHttpRequest!=null&&!req.onCompleteInternalHandled){
req.aborted=true;
req.xmlHttpRequest.abort();
AjaxRequest.numActiveAjaxRequests--;
if(AjaxRequest.numActiveAjaxRequests==0&&typeof(window['AjaxRequestEnd'])=="function"){
AjaxRequestEnd(req.groupName);
}
if(req.groupName!=null){
AjaxRequest.numActiveAjaxGroupRequests[req.groupName]--;
if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==0&&typeof(req.onGroupEnd)=="function"){
req.onGroupEnd(req.groupName);
}
}
if(typeof(req.onTimeout)=="function"){
req.onTimeout(req);
}
delete req.xmlHttpRequest['onreadystatechange'];
req.xmlHttpRequest=null;
}
};
req.process=
function(){
if(req.xmlHttpRequest!=null){
if(req.generateUniqueUrl&&req.method=="GET"){
req.parameters["AjaxRequestUniqueId"]=new Date().getTime()+""+req.requestIndex;
}
var content=null;
for(var i in req.parameters){
if(req.queryString.length>0){req.queryString+="&";}
req.queryString+=encodeURIComponent(i)+"="+encodeURIComponent(req.parameters[i]);
}
if(req.method=="GET"){
if(req.queryString.length>0){
req.url+=((req.url.indexOf("?")>-1)?"&":"?")+req.queryString;
}
}
req.xmlHttpRequest.open(req.method,req.url,req.async,req.username,req.password);
if(req.method=="POST"){
if(typeof(req.xmlHttpRequest.setRequestHeader)!="undefined"){
req.xmlHttpRequest.setRequestHeader('Content-type','application/x-www-form-urlencoded');
}
content=req.queryString;
}
if(req.timeout>0){
setTimeout(req.onTimeoutInternal,req.timeout);
}
req.xmlHttpRequest.send(content);
}
};
req.handleArguments=
function(args){
for(var i in args){
if(typeof(req[i])=="undefined"){
req.parameters[i]=args[i];
}
else{
req[i]=args[i];
}
}
};
req.getAllResponseHeaders=
function(){
if(req.xmlHttpRequest!=null){
if(req.responseReceived){
return req.xmlHttpRequest.getAllResponseHeaders();
}
alert("Cannot getAllResponseHeaders because a response has not yet been received");
}
};
req.getResponseHeader=
function(headerName){
if(req.xmlHttpRequest!=null){
if(req.responseReceived){
return req.xmlHttpRequest.getResponseHeader(headerName);
}
alert("Cannot getResponseHeader because a response has not yet been received");
}
};
return req;
}
AjaxRequest.getXmlHttpRequest=function(){
if(window.XMLHttpRequest){
return new XMLHttpRequest();
}
else if(window.ActiveXObject){
}
else{
return null;
}
};
AjaxRequest.isActive=function(){
return(AjaxRequest.numActiveAjaxRequests>0);
};
AjaxRequest.get=function(args){
AjaxRequest.doRequest("GET",args);
};
AjaxRequest.post=function(args){
AjaxRequest.doRequest("POST",args);
};
AjaxRequest.doRequest=function(method,args){
if(typeof(args)!="undefined"&&args!=null){
var myRequest=new AjaxRequest();
myRequest.method=method;
myRequest.handleArguments(args);
myRequest.process();
}
};
AjaxRequest.submit=function(theform,args){
var myRequest=new AjaxRequest();
if(myRequest==null){return false;}
var serializedForm=AjaxRequest.serializeForm(theform);
myRequest.method=theform.method.toUpperCase();
myRequest.url=theform.action;
myRequest.handleArguments(args);
myRequest.queryString=serializedForm;
myRequest.process();
return true;
};
AjaxRequest.serializeForm=function(theform){
var els=theform.elements;
var len=els.length;
var queryString="";
this.addField=
function(name,value){
if(queryString.length>0){
queryString+="&";
}
queryString+=encodeURIComponent(name)+"="+encodeURIComponent(value);
};
for(var i=0;i<len;i++){
var el=els[i];
if(!el.disabled){
switch(el.type){
case'text':case'password':case'hidden':case'textarea':
this.addField(el.name,el.value);
break;
case'select-one':
if(el.selectedIndex>=0){
this.addField(el.name,el.options[el.selectedIndex].value);
}
break;
case'select-multiple':
for(var j=0;j<el.options.length;j++){
if(el.options[j].selected){
this.addField(el.name,el.options[j].value);
}
}
break;
case'checkbox':case'radio':
if(el.checked){
this.addField(el.name,el.value);
}
break;
}
}
}
return queryString;
};
AjaxRequest.numActiveAjaxRequests=0;
AjaxRequest.numActiveAjaxGroupRequests=new Object();
AjaxRequest.numAjaxRequests=0;