body{

}

#maincontainer
{
    position: absolute;
    left: 0px;
    top: 0px;
    bottom: 0px;
    right: 0px;
    margin: auto;
}
#innermaincontainer
{
    position: relative;
    width: 100%;
    height: 100%;
}

#mainformcontainer
{
    position: absolute;
    width: 100%;
    top: 0px;
    bottom: 0px;
}


#captchaimg {
    margin: auto;
}