function navDrop(dropBox, bOx){
var Top = bOx.offsetTop + bOx.offsetHeight + window.main.offsetTop + window.body.offsetTop
var Left = bOx.offsetLeft + window.main.offsetLeft + window.body.offsetLeft
dropBox.style.left = Left
dropBox.style.top = Top
dropBox.style.visibility = 'visible'
}

function navRemove(dropBox){
dropBox.style.visibility = 'hidden'
}

function stayUp(dropBox){
dropBox.style.visibility = 'visible'
}