function showPopUp(el) {
var cvr = document.getElementById("cover")
var dlg = document.getElementById(el)
cvr.style.display = "block"
dlg.style.display = "block"
document.form.abc.focus()
return false 
if (document.body.style.overflow = "hidden") {
cvr.style.width = "100%"
cvr.style.height = "100%"
}

}
function closePopUp(el) {
var cvr = document.getElementById("cover")
var dlg = document.getElementById(el)
cvr.style.display = "none"
dlg.style.display = "none"
/*document.body.style.overflowY = "scroll"*/
}