function sack(file){
	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
	this.requestFile = file;
	this.method = "POST";
	this.URLString = "";
	this.encodeURIString = true;
	this.execute = false;

	this.onLoading = function() { };
	this.onLoaded = function() { };
	this.onInteractive = function() { };
	this.onCompletion = function() { };

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};
	
	this.setVar = function(name, value){
		if (this.URLString.length < 3){
			this.URLString = name + "=" + value;
		} else {
			this.URLString += "&" + name + "=" + value;
		}
	}
	
	this.encVar = function(name, value){
		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
	}
	
	this.encodeURLString = function(string){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			varArray[i] = this.encVar(urlVars[0],urlVars[1]);
		}
	return varArray.join('&');
	}
	
	this.runResponse = function(){
		eval(this.response);
	}
	
	this.runAJAX = function(urlstring){
		this.responseStatus = new Array(2);
		if(this.failed && this.AjaxFailedAlert){ 
			alert(this.AjaxFailedAlert); 
		} else {
			if (urlstring){ 
				if (this.URLString.length){
					this.URLString = this.URLString + "&" + urlstring; 
				} else {
					this.URLString = urlstring; 
				}
			}
			if (this.encodeURIString){
				var timeval = new Date().getTime(); 
				this.URLString = this.encodeURLString(this.URLString);
				this.setVar("rndval", timeval);
			}
			if (this.element) { this.elementObj = document.getElementById(this.element); }
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
					} catch (e) {}
				}

				this.xmlhttp.send(this.URLString);
				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState){
						case 1:
							self.onLoading();
						break;
						case 2:
							self.onLoaded();
						break;
						case 3:
							self.onInteractive();
						break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;
							self.onCompletion();
							if(self.execute){ self.runResponse(); }
							if (self.elementObj) {
								var elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							self.URLString = "";
						break;
					}
				};
			}
		}
	};
this.createAJAX();
}






var enableCache = true;
var jsCache = new Array();

var dynamicContent_ajaxObjects = new Array();


function ajax_showContent(divId,ajaxIndex,pathToFile)
{
	
	
 var res_content=dynamicContent_ajaxObjects[ajaxIndex].response.split("||~||");
 
// alert(res_content[0]);
 
  document.getElementById(divId).innerHTML =res_content[0];
  document.getElementById('pres_for').value =res_content[1];
  
  
  if(enableCache){
    jsCache[pathToFile] = dynamicContent_ajaxObjects[ajaxIndex].response;
  }
  dynamicContent_ajaxObjects[ajaxIndex] = false;
}



function ajax_show_prescript_id(fromId,divId,pathToFile)
{
   
	//pathToFile='add_email.php';
   var objform=document.getElementById("f1");
     var ajaxIndex = dynamicContent_ajaxObjects.length;
   
    var sel_id=document.getElementById(escape(fromId)).value;
	
 // var data="&f_name=" + escape(f_name) + "&l_name=" + escape(l_name)  + "&email=" + escape(email)+"&group="+escape(group);
   var ajaxIndex = dynamicContent_ajaxObjects.length;
  document.getElementById(divId).innerHTML = 'Loading content...';
  dynamicContent_ajaxObjects[ajaxIndex] = new sack();
  //ajax_list_externalFile + '?' + paramToExternalFile
  //dynamicContent_ajaxObjects[ajaxIndex].requestFile = pathToFile+'?action=add'+data;
  pathToFile+='?id='+escape(sel_id);
  // pathToFile+='?action=add';
  /* dynamicContent_ajaxObjects[ajaxIndex].setVar('f_name',f_name);
   dynamicContent_ajaxObjects[ajaxIndex].setVar('l_name',l_name);
   dynamicContent_ajaxObjects[ajaxIndex].setVar('email',email);
   dynamicContent_ajaxObjects[ajaxIndex].setVar('group',group);
   */
   //alert(pathToFile);
   dynamicContent_ajaxObjects[ajaxIndex].requestFile = pathToFile;
  dynamicContent_ajaxObjects[ajaxIndex].onCompletion = 
  function(){ ajax_showContent(divId,ajaxIndex,pathToFile); };  
  dynamicContent_ajaxObjects[ajaxIndex].runAJAX();  
  
}




function ajax_loadContent(divId,pathToFile)
{
  if(enableCache && jsCache[pathToFile]){
    document.getElementById(divId).innerHTML = jsCache[pathToFile];
    return;
  }
  
  var ajaxIndex = dynamicContent_ajaxObjects.length;
  document.getElementById(divId).innerHTML = 'Loading content...';
 // document.getElementById('show_email').innerHTML='';
  dynamicContent_ajaxObjects[ajaxIndex] = new sack();
  dynamicContent_ajaxObjects[ajaxIndex].requestFile = pathToFile;

  dynamicContent_ajaxObjects[ajaxIndex].onCompletion = 
  function(){ ajax_showContent(divId,ajaxIndex,pathToFile); };  

  dynamicContent_ajaxObjects[ajaxIndex].runAJAX();  
  
  
}