/*
ex. openWin('file.ext','mywin',640,480,1)
*/
function openWin(Url,Name,Width,Height,Scroll) {
    if (navigator.appVersion>="4") {
        var windowW = Width;
        var windowH = Height;
        var windowX = Math.ceil( (window.screen.width  - windowW) / 2 );
        var windowY = Math.ceil( (window.screen.height - windowH) / 2 );
        new_window = window.open(Url,Name,'left='+windowX+',top='+windowY+',width='+Width+',height='+Height+',scrollbars='+Scroll+',location=no,menubar=no,toolbar=no,status=0,statusbar=0,copyhistory=no');
        new_window.focus();
    } else {
        new_window = window.open(Url,Name,'width='+Width+',height='+Height+',scrollbars='+Scroll+',location=no,menubar=no,toolbar=no,status=0,statusbar=0');
        new_window.focus();
    }
}

/*
XHTML strict fix for links with target.
target="_blank" is replaced by rel="external" and 
forced back to target by this script.
*/
function externalLinks() {
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i<anchors.length; i++) {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") {
            anchor.target = "_blank";
        }
    }
}
window.onload = externalLinks;

// disallow the page to be framed
if (window.self != window.top){ 
    top.location.replace(window.location.pathname); 
}

function getElemRefs(id) {
    var el = (document.getElementById) ? document.getElementById(id) : (document.all) ? document.all[id] : (document.layers) ? document.layers[id] : null;
    if (el) el.css = (el.style) ? el.style : el;
    return el;
}
function showLayer(id) {
    var lyr = getElemRefs(id);
    if (lyr && lyr.css) lyr.css.display = "block";
}
function hideLayer(id) {
    var lyr = getElemRefs(id);
    if (lyr && lyr.css) lyr.css.display = "none";
}