var _RETURN_AS_JSON=2;var _RETURN_AS_TEXT=1;var _RETURN_AS_DOM=0;var _POST=0;var _GET=1;var _CACHE=0;var _NO_CACHE=1;function DataRequestor(){var self=this;this.getXMLHTTP=function(){var xmlHTTP=null;try{xmlHTTP=new XMLHttpRequest();}catch(e){try{xmlHTTP=new ActiveXObject("Msxml2.XMLHTTP")}catch(e){var success=false;var MSXML_XMLHTTP_PROGIDS=new Array('Microsoft.XMLHTTP','MSXML2.XMLHTTP','MSXML2.XMLHTTP.5.0','MSXML2.XMLHTTP.4.0','MSXML2.XMLHTTP.3.0');for(var i=0;i<MSXML_XMLHTTP_PROGIDS.length&&!success;i++){try{xmlHTTP=new ActiveXObject(MSXML_XMLHTTP_PROGIDS[i]);success=true;}catch(e){xmlHTTP=null;}}}}
self._XML_REQ=xmlHTTP;return self._XML_REQ;}
this.getURL=function(url){self.userModifiedData="";switch(arguments[1]){case _RETURN_AS_DOM:case _RETURN_AS_TEXT:case _RETURN_AS_JSON:self.returnType=arguments[1];break;default:self.returnType=_RETURN_AS_TEXT;}
if((typeof self._XML_REQ.abort)!="undefined"&&self._XML_REQ.readyState!=0){self._XML_REQ.abort();}
self._XML_REQ.onreadystatechange=self.callback;var requestType="GET";var getUrlString=(url.indexOf("?")!=-1)?"&":"?";for(var i in self.argArray[_GET]){getUrlString+=i+"="+self.argArray[_GET][i]+"&";}
var postUrlString="";for(i in self.argArray[_POST]){postUrlString+=i+"="+self.argArray[_POST][i]+"&";}
if(postUrlString!=""){requestType="POST";}
self._XML_REQ.open(requestType,url+getUrlString,true);if((typeof self._XML_REQ.setRequestHeader)!="undefined"){if(self.returnType==_RETURN_AS_DOM&&typeof self._XML_REQ.overrideMimeType=="function"){self._XML_REQ.overrideMimeType('text/xml');}
self._XML_REQ.setRequestHeader('Content-Type','application/x-www-form-urlencoded');}
self._XML_REQ.send(postUrlString);return true;}
this.callback=function(){if(self.onLoad){self.onload=self.onLoad;}
if(self.onReplace){self.onreplace=self.onReplace;}
if(self.onProgress){self.onprogress=self.onProgress;}
if(self.onFail){self.onfail=self.onFail;}
if((self._XML_REQ.readyState==4&&self._XML_REQ.status==200)||(self._XML_REQ.readyState==4&&self._XML_REQ.status==0)){var obj=self.getObjToReplace();if(self.onload){switch(self.returnType){case _RETURN_AS_TEXT:self.onload(self._XML_REQ.responseText,obj);break;case _RETURN_AS_DOM:self.onload(self.normalizeWhitespace(self._XML_REQ.responseXML),obj);break;case _RETURN_AS_JSON:self.onload(eval('('+self._XML_REQ.responseText+')'),obj);break;}}
if(obj){if(obj.nodeName=="TEXTAREA"||obj.nodeName=="INPUT"){self.objOldContent=obj.value;obj.value=(self.userModifiedData)?self.userModifiedData:self._XML_REQ.responseText;self.objNewContent=obj.value;}else{self.objOldContent=obj.innerHTML;obj.innerHTML=(self.userModifiedData)?self.userModifiedData:self._XML_REQ.responseText;self.objNewContent=obj.innerHTML;}
if(self.onreplace){self.onreplace(obj,self.objOldContent,self.objNewContent);}}}else if(self._XML_REQ.readyState==3){if(self.onprogress&&!document.all){var contentLength=0;try{contentLength=self._XML_REQ.getResponseHeader("Content-Length");}catch(e){contentLength=-1;}
self.onprogress(self._XML_REQ.responseText.length,contentLength);}}else if(self._XML_REQ.readyState==4){if(self.onfail){self.onfail(self._XML_REQ.status);}else{throw new Error("Data Request failed with an HTTP status of "+self._XML_REQ.status+"\nresponseText = "+self._XML_REQ.responseText);}}}
this.normalizeWhitespace=function(domObj){if(document.createTreeWalker){var filter={acceptNode:function(node){if(/\S/.test(node.nodeValue)){return NodeFilter.FILTER_SKIP;}
return NodeFilter.FILTER_ACCEPT;}}
var treeWalker=document.createTreeWalker(domObj,NodeFilter.SHOW_TEXT,filter,true);while(treeWalker.nextNode()){treeWalker.currentNode.parentNode.removeChild(treeWalker.currentNode);treeWalker.currentNode=domObj;}
return domObj;}else{return domObj;}}
this.commitData=function(newData){self.userModifiedData=newData;}
this.setObjToReplace=function(obj){if(typeof obj=="object"){self.objToReplace=obj;}else if(typeof obj=="string"){self.objToReplaceID=obj;}}
this.getObjToReplace=function(){if(self.objToReplaceID!=""){self.objToReplace=document.getElementById(self.objToReplaceID);self.objToReplaceID="";}
return self.objToReplace;}
this.addArg=function(type,name,value){self.argArray[type][name]=escape(value);}
this.clearArgs=function(){self.argArray[_POST]=new Array();self.argArray[_GET]=new Array();}
this.addArgsFromForm=function(formID){var theForm=document.getElementById(formID);var submitMethod=(theForm.getAttribute('method').toLowerCase()=='post')?_POST:_GET;for(var i=0;i<theForm.childNodes.length;i++){theNode=theForm.childNodes[i];switch(theNode.nodeName.toLowerCase()){case"input":case"select":case"textarea":this.addArg(submitMethod,theNode.id,theNode.value);break;}}}
this.clear=function(){self.returnType=_RETURN_AS_TEXT;self.argArray=new Array();self.objToReplace=null;self.objToReplaceID="";self.onload=null;self.onfail=null;self.onprogress=null;self.cache=new Array();this.clearArgs();}
if(!this.getXMLHTTP()){throw new Error("Could not load XMLHttpRequest object");}
this.clear();}