// PHP Layers Menu 3.1.0 (C) 2001-2003 Marco Pratesi (marco at telug dot it)

var layerLeft = new Array();
var layerTop = new Array();

function setVisibility(layer,on) {
    if (on) {
        if (DOM) {
            document.getElementById(layer).style.visibility = "visible";
        } else if (NS4) {
            document.layers[layer].visibility = "show";
        } else {
            document.all[layer].style.visibility = "visible";
        }
    } else {
        if (DOM) {
            document.getElementById(layer).style.visibility = "hidden";
        } else if (NS4) {
            document.layers[layer].visibility = "hide";
        } else {
            document.all[layer].style.visibility = "hidden";
        }
    }
}

function isVisible(layer) {
    if (DOM) {
        return (document.getElementById(layer).style.visibility == "visible");
    } else if (NS4) {
        return (document.layers[layer].visibility == "show");
    } else {
        return (document.all[layer].style.visibility == "visible");
    }
}

function setLeft(layer,x) {
layerLeft[layer] = x;
    if (DOM && !Opera5) {
        document.getElementById(layer).style.left = x + "px";
    } else if (Opera5) {
        document.getElementById(layer).style.left = x;
    } else if (NS4) {
        document.layers[layer].left = x;
    } else {
        document.all[layer].style.pixelLeft = x;
    }
}

function getOffsetLeft(layer) {
    var value = 0;
    if (DOM) {
        var object = document.getElementById(layer);
        value = object.offsetLeft;
        while (object.tagName != "BODY" && object.offsetParent) {
            object = object.offsetParent;
            value += object.offsetLeft;
        }
    } else if (NS4) {
        value = document.layers[layer].pageX;
    } else {    // IE4 IS SIMPLY A BASTARD !!!
        if (document.all["IE4" + layer]) {
            layer = "IE4" + layer;
        }
        var object = document.all[layer];
        value = object.offsetLeft;
        while (object.tagName != "BODY") {
            object = object.offsetParent;
            value += object.offsetLeft;
        }
    }
    return (value);
}

function setTop(layer,y) {
layerTop[layer] = y;
    if (DOM && !Opera5) {
        document.getElementById(layer).style.top = y + "px";
    } else if (Opera5) {
        document.getElementById(layer).style.top = y;
    } else if (NS4) {
        document.layers[layer].top = y;
    } else {
        document.all[layer].style.pixelTop = y;
    }
}

function getOffsetTop(layer) {
// IE 5.5 and 6.0 behaviour with this function is really strange:
// in some cases, they return a really too large value...
// ... after all, IE is buggy, nothing new
    var value = 0;
    if (DOM) {
        var object = document.getElementById(layer);
        value = object.offsetTop;
        while (object.tagName != "BODY" && object.offsetParent) {
            object = object.offsetParent;
            value += object.offsetTop;
        }
    } else if (NS4) {
        value = document.layers[layer].pageY;
    } else {    // IE4 IS SIMPLY A BASTARD !!!
        if (document.all["IE4" + layer]) {
            layer = "IE4" + layer;
        }
        object = document.all[layer];
        value = object.offsetTop;
        while (object.tagName != "BODY") {
            object = object.offsetParent;
            value += object.offsetTop;
        }
    }
    return (value);
}

function setWidth(layer,w) {
    if (DOM) {
        document.getElementById(layer).style.width = w;
    } else if (NS4) {
//        document.layers[layer].width = w;
    } else {
        document.all[layer].style.pixelWidth = w;
    }
}

function getOffsetWidth(layer) {
    var value = 0;
    if (DOM && !Opera56) {
        value = document.getElementById(layer).offsetWidth;
    } else if (NS4) {
        value = document.layers[layer].document.width;
    } else if (Opera56) {
        value = document.getElementById(layer).style.pixelWidth;
    } else {    // IE4 IS SIMPLY A BASTARD !!!
        if (document.all["IE4" + layer]) {
            layer = "IE4" + layer;
        }
        value = document.all[layer].offsetWidth;
    }
    return (value);
}

function setHeight(layer,h) {    // unused, not tested
    if (DOM) {
        document.getElementById(layer).style.height = h;
    } else if (NS4) {
//        document.layers[layer].height = h;
    } else {
        document.all[layer].style.pixelHeight = h;
    }
}

function getOffsetHeight(layer) {
    var value = 0;
    if (DOM && !Opera56) {
        value = document.getElementById(layer).offsetHeight;
    } else if (NS4) {
        value = document.layers[layer].document.height;
    } else if (Opera56) {
        value = document.getElementById(layer).style.pixelHeight;
    } else {    // IE4 IS SIMPLY A BASTARD !!!
        if (document.all["IE4" + layer]) {
            layer = "IE4" + layer;
        }
        value = document.all[layer].offsetHeight;
    }
    return (value);
}

function getWindowWidth() {
    var value = 0;
    if ((DOM && !IE) || NS4 || Konqueror || Opera) {
        value = top.innerWidth;
//    } else if (NS4) {
//        value = document.width;
    } else {    // IE
        if (document.documentElement && document.documentElement.clientWidth) {
            value = document.documentElement.clientWidth;
        } else if (document.body) {
            value = document.body.clientWidth;
        }
    }
    if (isNaN(value)) {
        value = top.innerWidth;
    }
    return (value);
}

function getWindowXOffset() {
    var value = 0;
    if ((DOM && !IE) || NS4 || Konqueror || Opera) {
        value = window.pageXOffset;
    } else {    // IE
        if (document.documentElement && document.documentElement.scrollLeft) {
            value = document.documentElement.scrollLeft;
        } else if (document.body) {
            value = document.body.scrollLeft;
        }
    }
    return (value);
}

function getWindowHeight() {
    var value = 0;
    if ((DOM && !IE) || NS4 || Konqueror || Opera) {
        value = top.innerHeight;
    } else {    // IE
        if (document.documentElement && document.documentElement.clientHeight) {
            value = document.documentElement.clientHeight;
        } else if (document.body) {
            value = document.body.clientHeight;
        }
    }
    if (isNaN(value)) {
        value = top.innerHeight;
    }
    return (value);
}

function getWindowYOffset() {
    var value = 0;
    if ((DOM && !IE) || NS4 || Konqueror || Opera) {
        value = window.pageYOffset;
    } else {    // IE
        if (document.documentElement && document.documentElement.scrollTop) {
            value = document.documentElement.scrollTop;
        } else if (document.body) {
            value = document.body.scrollTop;
        }
    }
    return (value);
}