function showForm() {
    document.getElementById('glass').style.display='block';
    document.getElementById('glass').style.width=(document.documentElement.clientWidth+0)+'px';
    document.getElementById('glass').style.left='0px';
    document.getElementById('glass').style.height=(document.documentElement.clientHeight+0)+'px';
    document.getElementById('glass').style.top='0px';
    var scrollTop = 0;
    var left = 0;
    scrollTop = (document.documentElement.scrollTop) ? document.documentElement.scrollTop : window.pageYOffset;
    //For IE 8
    if (scrollTop==undefined) scrollTop = 0;
    left = (document.documentElement.clientWidth-550)/2;
    oDiv = document.getElementById('theFormDiv');
    oDiv.style.display='block';
    oDiv.style.top = (scrollTop-10)+'px';
    oDiv.style.left = (left)+'px';
    return false;
}

function hideForm() {
    oDiv = document.getElementById('theFormDiv');
    oDiv.style.display='none';
    document.getElementById('glass').style.display='none';
    return false;
}