// getAnchorPosition(anchorname)
//   This function returns an object having .x and .y properties which are the coordinates
//   of the named anchor, relative to the page.
function getAnchorPosition(anchorname) {
    // This function will return an Object with x and y properties
    var useWindow = false;
    var coordinates = new Object();
    var x = 0, y = 0;
    // Browser capability sniffing
    var use_gebi = false, use_css = false, use_layers = false;
    if (document.getElementById) { use_gebi = true; }
    else if (document.all) { use_css = true; }
    else if (document.layers) { use_layers = true; }
    // Logic to find position
    if (use_gebi && document.all) {
        x = AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
        y = AnchorPosition_getPageOffsetTop(document.all[anchorname]);
    }
    else if (use_gebi) {
        var o = document.getElementById(anchorname);
        x = AnchorPosition_getPageOffsetLeft(o);
        y = AnchorPosition_getPageOffsetTop(o);
    }
    else if (use_css) {
        x = AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
        y = AnchorPosition_getPageOffsetTop(document.all[anchorname]);
    }
    else if (use_layers) {
        var found = 0;
        for (var i = 0; i < document.anchors.length; i++) {
            if (document.anchors[i].name == anchorname) { found = 1; break; }
        }
        if (found == 0) {
            coordinates.x = 0; coordinates.y = 0; return coordinates;
        }
        x = document.anchors[i].x;
        y = document.anchors[i].y;
    }
    else {
        coordinates.x = 0; coordinates.y = 0; return coordinates;
    }
    coordinates.x = x;
    coordinates.y = y;
    return coordinates;
}

// getAnchorWindowPosition(anchorname)
//   This function returns an object having .x and .y properties which are the coordinates
//   of the named anchor, relative to the window
function getAnchorWindowPosition(anchorname) {
    var coordinates = getAnchorPosition(anchorname);
    var x = 0;
    var y = 0;
    if (document.getElementById) {
        if (isNaN(window.screenX)) {
            x = coordinates.x - document.body.scrollLeft + window.screenLeft;
            y = coordinates.y - document.body.scrollTop + window.screenTop;
        }
        else {
            x = coordinates.x + window.screenX + (window.outerWidth - window.innerWidth) - window.pageXOffset;
            y = coordinates.y + window.screenY + (window.outerHeight - 24 - window.innerHeight) - window.pageYOffset;
        }
    }
    else if (document.all) {
        x = coordinates.x - document.body.scrollLeft + window.screenLeft;
        y = coordinates.y - document.body.scrollTop + window.screenTop;
    }
    else if (document.layers) {
        x = coordinates.x + window.screenX + (window.outerWidth - window.innerWidth) - window.pageXOffset;
        y = coordinates.y + window.screenY + (window.outerHeight - 24 - window.innerHeight) - window.pageYOffset;
    }
    coordinates.x = x;
    coordinates.y = y;
    return coordinates;
}

// Functions for IE to get position of an object
function AnchorPosition_getPageOffsetLeft(el) {
    var ol = el.offsetLeft;
    while ((el = el.offsetParent) != null) { ol += el.offsetLeft; }
    return ol;
}
function AnchorPosition_getWindowOffsetLeft(el) {
    return AnchorPosition_getPageOffsetLeft(el) - document.body.scrollLeft;
}
function AnchorPosition_getPageOffsetTop(el) {
    var ot = el.offsetTop;
    while ((el = el.offsetParent) != null) { ot += el.offsetTop; }
    return ot;
}
function AnchorPosition_getWindowOffsetTop(el) {
    return AnchorPosition_getPageOffsetTop(el) - document.body.scrollTop;
}