function showAlert()
{
if (GetCookie("alert") == "ok") return
window.open('/alert.htm','','width=360,height=300')
var dy = new Date(2010,1,1)
SetCookie ("alert", "ok", dy)
}
function getCookieVal(offset)
{
var endstr = document.cookie.indexOf (";", offset)
if (endstr == -1) endstr = document.cookie.length
return unescape(document.cookie.substring(offset, endstr))
}
function GetCookie(name)
{
var arg = name + "="
var alen = arg.length
var clen = document.cookie.length
var i = 0
while (i < clen)
{
var j = i + alen
if (document.cookie.substring(i, j) == arg) return getCookieVal (j)
i = document.cookie.indexOf(" ", i) + 1
if (i == 0) break
}
return (null)
}