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 validateForm(form) { //This is the name of the function

if (form.company.value == "") {

   alert("Please enter your company name.");

   form.company.focus( );

   return false;

   }



if (form.Subject.value == "") {

   alert("Please enter your question.");

   form.Subject.focus( );

   return false;

   }



if (form.firstname.value == "") {

   alert("Please enter your first name.");

   form.firstname.focus( );

   return false;

   }



if (form.lastname.value == "") {

   alert("Please enter your last name.");

   form.lastname.focus( );

   return false;

   }



if (validate_email(form.EmailFrom,"Not a valid e-mail address!")==false) {

   form.EmailFrom.focus( );

   return false;

   }

}