document.onclick = function()
{
oDiv = document.getElementById("DivID");
if( event.srcElement != oDiv && !oDiv.contains(event.srcElement) )
{
oDiv.style.visibility = "hidden";
}
}
{
oDiv = document.getElementById("DivID");
if( event.srcElement != oDiv && !oDiv.contains(event.srcElement) )
{
oDiv.style.visibility = "hidden";
}
}
if (window.event.srcElement.id !='divname'){
document.all.divname.style.visibility = 'hidden';
}