function XMLobject()
	{
	http_request = false;
if (window.XMLHttpRequest) { // Mozilla, Safari,...
   http_request = new XMLHttpRequest();
   if (http_request.overrideMimeType) {
http_request.overrideMimeType('text/xml');
   }
} 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 http_request;
	}


function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}