var divid = 'output';
var loadingmessage = '';
 
function AJAX(){
	var xmlHttp;
	try{
		xmlHttp=new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari
	return xmlHttp;
	}

	catch (e){
		try{
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); // Internet Explorer
		return xmlHttp;
		}

		catch (e){
			try{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			return xmlHttp;
			}

			catch (e){
			alert("Your browser does not support AJAX!");
			return false;
			}
		}
	} 
}
 
function formget(f, url, returndiv) {
	var poststr = getFormValues(f);
	postData(url, poststr); 
	divid = returndiv
}
 
function postData(url, parameters){
	var xmlHttp = AJAX();
 
	xmlHttp.onreadystatechange =  function(){
		if(xmlHttp.readyState > 0 && xmlHttp.readyState < 4){
			document.getElementById(divid).innerHTML=loadingmessage;
		}
		if (xmlHttp.readyState == 4) {
			document.getElementById(divid).innerHTML=xmlHttp.responseText;
		}
	}

	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
}
 
function getFormValues(fobj){
	var str = "";
	var valueArr = null;
	var val = "";
	var cmd = "";
 
	for(var i = 0;i < fobj.elements.length;i++){
		switch(fobj.elements[i].type){
			case "text":
				str += fobj.elements[i].name +
				"=" + escape(fobj.elements[i].value) + "&";
				break;
			case "hidden":
				str += fobj.elements[i].name +
				"=" + escape(fobj.elements[i].value) + "&";
				break;
			case "textarea":
				str += fobj.elements[i].name +
				"=" + escape(fobj.elements[i].value) + "&";
				break;
			case "select-one":
				str += fobj.elements[i].name +
				"=" + fobj.elements[i].options[fobj.elements[i].selectedIndex].value + "&";
				break;
		}
	}
	str = str.substr(0,(str.length - 1));
	return str;
}