function createRequestObject(){
	var request_o; 
	var browser = navigator.appName; 

	if(browser == "Microsoft Internet Explorer"){
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else{
		request_o = new XMLHttpRequest();
	}
	return request_o; 
}

var http = createRequestObject(); 

function getProducts(){
	http.open('get', 'request.php?action=get_products&id=' 
			+ document.getElementById("select_category_select").selectedIndex);
			
	http.onreadystatechange = handleProducts; 

	http.send(null);
}


function handleProducts(){
	if(http.readyState == 4){ //Finished loading the response
		var response = http.responseText;
		document.getElementById('product_cage').innerHTML = response;
	}
}

function getImages(){
	http.open('get', 'request.php?action=get_images');
			
	http.onreadystatechange = handleImages; 

	http.send(null);
}


function handleImages(){
	if(http.readyState == 1) {
	document.getElementById('img_cage').innerHTML = '<img src="/images/ajax-loader.gif">';
}

	else if(http.readyState == 4){ //Finished loading the response
		var response = http.responseText;
		document.getElementById('img_cage').innerHTML = response;
	}
}