/* The following function creates an XMLHttpRequest object... */
function createRequestObject(){
	var request_o; //declare the variable to hold the object.
	var browser = navigator.appName; //find the browser name
	if(browser == "Microsoft Internet Explorer"){
		/* Create the object using MSIE's method */
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		/* Create the object using other browser's method */
		request_o = new XMLHttpRequest();
	}
	return request_o; //return the object
}

/* The variable http will hold our new XMLHttpRequest object. */
var http = createRequestObject(); 

/* Function called to get the product categories list */
function getVenueInfo(){
	/* Create the request. The first argument to the open function is the method (POST/GET),
		and the second argument is the url... 
		document contains references to all items on the page
		We can reference document.form_category_select.select_category_select and we will
		be referencing the dropdown list. The selectedIndex property will give us the 
		index of the selected item. 
	*/
	http.open('get', '/administrator/index2.php?act=venues&option=com_pmcalendar&task=venueInfo&id=' + document.adminForm.venueID.options[document.adminForm.venueID.selectedIndex].value);
	http.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");		
	/* Define a function to call once a response has been received. This will be our
		handleProductCategories function that we define below. */
	http.onreadystatechange = handleVenueInfo; 
	/* Send the data. We use something other than null when we are sending using the POST
		method. */
	http.send(null);
}

/* Function called to handle the list that was returned from the internal_request.php file.. */
function handleVenueInfo(){
	/* Make sure that the transaction has finished. The XMLHttpRequest object 
		has a property called readyState with several states:
		0: Uninitialized
		1: Loading
		2: Loaded
		3: Interactive
		4: Finished */
	if(http.readyState == 4){ //Finished loading the response
		/* We have got the response from the server-side script,
			let's see just what it was. using the responseText property of 
			the XMLHttpRequest object. */
		var response = http.responseXML;
		/* And now we want to change the product_categories <div> content.
			we do this using an ability to get/change the content of a page element 
			that we can find: innerHTML. */
		if((response.getElementsByTagName("venue_phone").length > 0) && 
			(response.getElementsByTagName("venue_phone")[0].firstChild != undefined)) {
			document.adminForm.eventPhone.value = response.getElementsByTagName("venue_phone")[0].firstChild.data;
		}
		
		if((response.getElementsByTagName("venue_url").length > 0) && 
			(response.getElementsByTagName("venue_url")[0].firstChild != undefined)) {
			document.adminForm.eventUrl.value = response.getElementsByTagName("venue_url")[0].firstChild.data;
		}
		
		if((response.getElementsByTagName("venue_altPhone").length > 0) &&
		   (response.getElementsByTagName("venue_altPhone")[0].firstChild != undefined)) {
		 	document.getElementById("eventAltPhone").value = response.getElementsByTagName("venue_altPhone")[0].firstChild.data;  
		}
	}
}

/* Function called to get the product categories list */
function getResourcesVenueInfo(){
	/* Create the request. The first argument to the open function is the method (POST/GET),
		and the second argument is the url... 
		document contains references to all items on the page
		We can reference document.form_category_select.select_category_select and we will
		be referencing the dropdown list. The selectedIndex property will give us the 
		index of the selected item. 
	*/
	http.open('get', '/administrator/index2.php?act=venues&option=com_pmcalendar&task=resourcesVenueInfo&id=' + document.adminForm.venueDirOrderID.options[document.adminForm.venueDirOrderID.selectedIndex].value);
	http.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");		
	/* Define a function to call once a response has been received. This will be our
		handleProductCategories function that we define below. */
	http.onreadystatechange = handleVenueInfo; 
	/* Send the data. We use something other than null when we are sending using the POST
		method. */
	http.send(null);
}