if("Mouse in screen")
Application.Call("disableWheel")
else
Application.Call("enableWheel")


//Add this javscript to the web page


function disableWheel() {
    /* Gecko */
    addHandler(window, 'DOMMouseScroll', wheel);
    /* Opera */
    addHandler(window, 'mousewheel', wheel);
    /* IE */
    addHandler(document, 'mousewheel', wheel);
}

function enableWheel() {
    /* Gecko */
    removeHandler(window, 'DOMMouseScroll', wheel);
    /* Opera */
    removeHandler(window, 'mousewheel', wheel);
    /* IE */
    removeHandler(document, 'mousewheel', wheel);
}

//function for add envent handler
function addHandler(object, event, handler, useCapture) {
    if (object.addEventListener) {
        object.addEventListener(event, handler, useCapture ? useCapture : false);
    } else if (object.attachEvent) {
        object.attachEvent('on' + event, handler);
    } else alert("Add handler is not supported");
}

//function for remove envent handler
function removeHandler(object, event, handler) {
    if (object.removeEventListener) {
        object.removeEventListener(event, handler, false);
    } else if (object.detachEvent) {
        object.detachEvent('on' + event, handler);
    } else alert("Remove handler is not supported");
}

// Wheel event handler
function wheel(event) {
    var delta; // Scroll direction 
    // -1 - scroll down 
    // 1  - scroll up 
    event = event || window.event;
    // Opera & IE works with property wheelDelta 
    if (event.wheelDelta) {
        delta = event.wheelDelta / 120;
        // In Опере value of wheelDelta the same but with opposite sign 
        if (window.opera) delta = -delta;
        // Gecko uses property detail 
    } else if (event.detail) {
        delta = -event.detail / 3;
    }
    // Disables processing events
    if (event.preventDefault) event.preventDefault();
    event.returnValue = false;
    return delta;
}