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

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_contact_form(thisform)
{
with (thisform)
{
if (validate_email(realemail,"Not a valid e-mail address!")==false)
  {realemail.focus();return false;}
if (validate_required(realemail,"Email must be filled out!")==false)
  {realemail.focus();return false;}
if (validate_required(name,"Name must be filled out!")==false)
  {name.focus();return false;}
if (validate_required(phone,"Phone must be filled out!")==false)
  {phone.focus();return false;}
}
}