function open_window(url, width, height)
{
    var iWidth = screen.width - 200;
    if(width)
    {
        iWidth = width;
    }
    var iHeight = screen.height - 200;
    if(height)
    {
        iHeight = height;
    }
    var iLeft = (screen.width - iWidth) / 2;
    var iTop = (screen.height - iHeight) / 2;
    window.open(url, "", "top=" + iTop + ", left=" + iLeft + ", height=" + iHeight + ", width=" + iWidth + ", resizable=no, scrollbars=yes")
    return false;
}
function open_window_noscroll(url, width, height)
{
    var iWidth = screen.width - 200;
    if(width)
    {
        iWidth = width;
    }
    var iHeight = screen.height - 200;
    if(height)
    {
        iHeight = height;
    }
    var iLeft = (screen.width - iWidth) / 2;
    var iTop = (screen.height - iHeight) / 2;
    window.open(url, "", "top=" + iTop + ", left=" + iLeft + ", height=" + iHeight + ", width=" + iWidth + ", resizable=no, scrollbars=no")
    return false;
}
function OpenShoppingCart(strLocation)
{

    window.open(strLocation, "shoppingcart", "status=yes,scrollbars=yes,width=640,height=550,resizable=yes");

}