/*
General AJAX script
example:
document.write('Address: ' + get('ajax_back.php','addr_id=1312&cust_id=4'));
*/
var http_request = false;
function geto (lnk, poststr)
{
	poststr =  encodeURI(poststr)
	return makePOSTRequest(lnk, poststr + '&fk_id=' + Math.floor(Math.random()*100));
}
function get(lnk, poststr) 
{
	poststr =  encodeURI(poststr)
	return btrim(makePOSTRequest(lnk, poststr + '&fk_id=' + Math.floor(Math.random()*100)));
}
function makePOSTRequest(url, parameters) 
{
	http_request = false;
	if (window.XMLHttpRequest) 
	{ // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) 
		{
			http_request.overrideMimeType('text/html');
		}
	} 
	else if (window.ActiveXObject) 
	{ // IE
		try 
		{
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (e) 
		{
			try 
			{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (e)
			{
			}
		}
	}
	if (!http_request) 
	{
		alert('Cannot create XMLHTTP instance');
		return false;
	}
	http_request.open('POST', url, false);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
	rValue = http_request.responseText;
	return btrim(rValue);
}
function btrim (str) 
{
	str = str.replace(/^\s+/, '');
	for (var i = str.length - 1; i >= 0; i--) {
		if (/\S/.test(str.charAt(i))) {
			str = str.substring(0, i + 1);
			break;
		}
	}
	return str;
}