function openWindow(url) 
{ popupWin = window.open(url, 'openWin', "width=400, height=250, scrollbars=yes"); 
} 
// subscribe form varification
function validate_email(field,alerttxt)
{
with (field)
{
apos=value.indexOf("@")
dotpos=value.lastIndexOf(".")
if (apos<1||dotpos-apos<2)
  {alert(alerttxt);return false}
else {return true}
}
}
function validate_form(thisform)
{
with (thisform)
{
if (validate_email(email,"That doesn't appear to be a valid e-mail address. Please try again.")==false)
  {email.focus();return false}
}
}