function isBlank(s)
{
        for(var i = 0; i < s.length; i++)
        {
                var c = s.charAt(i);
                if ((c != ' ') && (c != '\n') && (c != '\t')) return false;
                  }
        return true;
}

function validate(dform)
   {
       if(isBlank(dform.login_name.value))
           {
           alert("Login name is missing!");
           dform.login_name.focus();
           return false;
           }
		if(isBlank(dform.login_pswd.value))
           {
           alert("Login password is missing!");
           dform.login_pswd.focus();
           return false;
           }
        return true;
  }

function validate2(dform)
   {
       if(isBlank(dform.first_name.value))
           {
           alert("First name is missing!");
           dform.first_name.focus();
           return false;
           }
		if(isBlank(dform.last_name.value))
           {
           alert("Last name is missing!");
           dform.last_name.focus();
           return false;
           }
		if(isBlank(dform.company_name.value))
           {
           alert("Company name is missing!");
           dform.company_name.focus();
           return false;
           }
		if(isBlank(dform.best_time.value))
           {
           alert("Best time to reach you is missing!");
           dform.best_time.focus();
           return false;
           }
        if(isBlank(dform.contact_phone.value))
           {
           alert("Contact phone is missing!");
           dform.contact_phone.focus();
           return false;
           }
        if(isBlank(dform.contact_email.value))
           {
           alert("Contact email is missing!");
           dform.contact_email.focus();
           return false;
           }
        return true;
  }

function validate3(dform)
   {
       if(isBlank(dform.user_name.value))
           {
           alert("User name is missing!");
           dform.user_name.focus();
           return false;
           }
		if(isBlank(dform.user_password.value))
           {
           alert("Password is missing!");
           dform.user_password.focus();
           return false;
           }
        return true;
  }