function openWindow(lnk){
open (lnk,"","height=400,width=400,scrollbars=yes,resizable=no,status=no,menubar=no,toolbar=no,location=no")
}
function hideDiv(DivID) { 
	document.getElementById(DivID).style.visibility = 'hidden'; 
} 
function showDiv(DivID) { 
	document.getElementById(DivID).style.visibility = 'visible'; 
}