function getPageN() {


        getPage(getPageName());
    
}


showLoadingMessage = function() {

    var div = document.getElementById("AA_" + this.id + "_loading_div");
    if (div == null) {
        div = document.createElement("DIV");

        document.body.appendChild(div);
        div.id = "AA_" + this.id + "_loading_div";

        div.innerHTML = " Loading...";
        div.style.position = "absolute";
        div.style.border = "1 solid black";
        div.style.color = "white";
        div.style.backgroundColor = "red";
        div.style.width = "100px";
        div.style.heigth = "50px";
        div.style.fontFamily = "Arial, Helvetica, sans-serif";
        div.style.fontWeight = "bold";
        div.style.fontSize = "11px";
    }
    div.style.top = document.body.scrollTop + "px";
    div.style.left = (document.body.offsetWidth - 100 - (document.all?20:0)) + "px";

    div.style.display = "";
}



hideLoadingMessage = function() {
    var div = document.getElementById("AA_" + this.id + "_loading_div");
    if (div != null)
        div.style.display = "none";

}



function getPage(page) {
    document.getElementById("load").style.display = "inline"; //show loading message
	showLoadingMessage();


    //the regular ajax stuff (CONTENT)
    if (xmlhttp.readyState == 0 || xmlhttp.readyState == 4) {
        try {
            xmlhttp.open("GET", "http://www.gregbrock.co.uk/includes/ajax/data.php?url=photo&ajax=yes&id=5910&ref1=&p=" + page, true); //open the page
            xmlhttp.onreadystatechange=function() {
                if (xmlhttp.readyState==4) {
                    document.getElementById("load").style.display = "none"; //done loading
			hideLoadingMessage();
                    if (document.getElementById("content_tab").innerHTML != xmlhttp.responseText) {
//                        doInnerHTML("content_tab", xmlhttp.responseText); //set the content html
			document.getElementById("content_tab").innerHTML = xmlhttp.responseText
                    }
                }
            }
            xmlhttp.send(null);
        }
        catch(e) {
            doInnerHTML("content_tab", e); //if there's an error, display it
            ready = 3;
        }
    }

}




//stop ajax
function sajax() {
    if (callInProgress()) {
        xmlhttp.abort();
    }
}
//check if a call is in progress
function callInProgress() {
    switch ( xmlhttp.readyState ) {
        case 1, 2, 3:
            return true;
        break;

        default:
            return false;
        break;
    }
}

//check if browser supports setRequestHeader
function isSup() {
    try {
        if (xmlhttp.setRequestHeader)
        { return (true); }
        else
        { return (false); }
    }
    catch (e) { return (true); /*IE gives an exception even though it supports the method*/ }
}
//get the page name
function getPageName()
{
    var n;
    if (window.location.href.split("#")[1]) {
        n = window.location.href.split("#")[1];
    }
    else { n = "home"; }
    return n;
}

var lastURL = window.location.href; //last location

//periodically check if the location has changed to change the page if so
function chkURL() {
    if (window.location.href != lastURL) {
        lastURL = window.location.href;
        getPageN();
    }
    window.setTimeout("chkURL()", 100);
}

window.setTimeout("chkURL()", 100);