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"){
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		request_o = new XMLHttpRequest();
	}
	return request_o; //return the object
}

var http = createRequestObject(); 

function getProducts(){
	http.open('get', 'internal_request1.php?action=get_products&id=' 
			+ document.frm.productid.options[document.frm.productid.selectedIndex].value);
	http.onreadystatechange = handleProducts; 
	http.send(null);
}

function getProducts1(){
	http.open('get', 'internal_request2.php?action=get_products&id=' 
			+ document.frm.manufacturerid.options[document.frm.manufacturerid.selectedIndex].value);
	http.onreadystatechange = handleProducts1; 
	http.send(null);
}

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

}

function handleProducts1(){
	if(http.readyState == 4){ //Finished loading the response
		var response = http.responseText;
		document.getElementById('product_cage1').innerHTML = response;
	}

}