/* common AJAX stuff */

var base_url = window.location.protocol + "//" + window.location.host + "/";
var xmlHttp = false;

function sendAJAXRequest(url, o) {

    //    document.write(url);
    xmlHttp = GetXmlHttpObject();

    xmlHttp.onreadystatechange = function(){
        if (xmlHttp.readyState == 4) {
            if (xmlHttp.status == 200) {
                if (typeof(o) == 'object') {
                    o.processResponse();
                }
            }
        }
    }
    xmlHttp.open('GET', url, true);
    xmlHttp.send(null);
}


function sendAJAXRequestSimple(url) {

    //    document.write(url);
    xmlHttp = GetXmlHttpObject();

    xmlHttp.onreadystatechange = function(){
        if (xmlHttp.readyState == 4) {
            if (xmlHttp.status == 200) {
                // great!
            }
        }
    }

    xmlHttp.open('GET', url, true);
    xmlHttp.send(null);
}



function GetXmlHttpObject() {
    var http_request=null;

    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            // set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            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;
    }
    return http_request;
}

function closeWithParentReload() {
        window.close();
        if (window.opener && !window.opener.closed) {
                window.opener.location.reload();
        }
}

/* more common stuff -sjm */

function hidediv(id) {
        //safe function to hide an element with a specified id
        if (document.getElementById && document.getElementById(id)) { // DOM3 = IE5, NS6
                document.getElementById(id).style.display = 'none';
        }
        else {
                if (document.layers && document.id) { // Netscape 4
                        document.id.display = 'none';
                }
                else if(document.all && document.all.id) { // IE 4
                        document.all.id.style.display = 'none';
                }
        }
}

function showdiv(id) {
        //safe function to show an element with a specified id

        if (document.getElementById) { // DOM3 = IE5, NS6
                document.getElementById(id).style.display = 'block';
        }
        else {
                if (document.layers) { // Netscape 4
                        document.id.display = 'block';
                }
                else { // IE 4
                        document.all.id.style.display = 'block';
                }
        }
}

function newWindowOpen(newWindowURL,newWindowName,newWindowOptions) {
                 var windowOptions = newWindowOptions;
                 if (!newWindowOptions) {
                        windowOptions = 'scrollbars=yes,menubar=no,height=750,width=800,resizable=yes,toolbar=no,location=no,status=no';
                 }
                 var evalstr = newWindowName+" = window.open(newWindowURL,newWindowName,windowOptions);";
                 eval (evalstr);

                 var focusstr = newWindowName+".focus()";
                 eval (focusstr);

}


function autoTab(original,destination) {
  if (original.getAttribute&&original.value.length==original.getAttribute("maxlength"))
  destination.focus()
}