function createRequestObject() {
    var r;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        r = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        r = new XMLHttpRequest();
    }
    return r;
}
var http = createRequestObject();
function chsess(action) {
    http.open('get', '?action='+action);
    http.send(null);
}

function cf(){
var f = document.getElementById("log");
var notify = document.getElementById("obs");
var al = "incorrect username or password";
	if (f.lname.value.length != "" && f.pwd.value.length != ""){
	notify.innerHTML = al;
	}
}