function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(action) {
    http.open('get', action);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse() {
    if(http.readyState == 4){
        
        var response 	= http.responseText;
        var parts 		= response.split("|");  
        if(parts[0] == "1") {
        	alert(parts[1]);
        } else if(parts[0] == "2") { //db error
        	alert(parts[1]);
        } else if(parts[0] == "0") { //other error
        	alert(parts[1]);
        } else {
        	alert(parts[1]);
        }
    }
}