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_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(name,"Name must be filled out!")==false)
  {name.focus();return false}
if (validate_required(email,"Email must be filled out!")==false)
  {email.focus();return false}
if (validate_email(email,"Not a valid e-mail address!")==false)
  {email.focus();return false}
  if (validate_required(securitycode,"Securitycode must be filled out!")==false)
  {securitycode.focus();return false}
 


}
}