// Handles HKP input for NN3+ and IE4+

function BasisCheck()
{

   if(document.Linkformular.url.value == "" || document.Linkformular.url.value == "http://")
   {
     alert("Enter your URL");
     document.Linkformular.url.focus();
     return false;
   }

   if(document.Linkformular.inhalt.value == "")
   {
     alert("Which content has your site");
     document.Linkformular.inhalt.focus();
     return false;
   }

   if(document.Linkformular.firma.value == "")
   {
     alert("Name of your company");
     document.Linkformular.firma.focus();
     return false;
   }

   if(document.Linkformular.name.value == "")
   {
     alert("Enter your name");
     document.Linkformular.name.focus();
     return false;
   }

   if(document.Linkformular.plzort.value == "")
   {
     alert("Enter your city!");
     document.Linkformular.plzort.focus();
     return false;
    }

   if(document.Linkformular.land.value == "")
   {
     alert("Enter your country!");
     document.Linkformular.land.focus();
     return false;
    }

   if(document.Linkformular.telefon.value == "")
   {
     alert("Enter your phone number");
     document.Linkformular.telefon.focus();
     return false;
    }

   if(document.Linkformular.email.value == "")
   {
     alert("Enter your email");
     document.Linkformular.email.focus();
     return false;
    }

   if(document.Linkformular.email.value.match(/\w*@\w.*\.\w\w*/) == null)
   {
     alert("Invalid email");
     document.Linkformular.email.focus();
     return false;
   }

   if(document.Linkformular.backlink.value == "" || document.Linkformular.backlink.value == "http://")
   {
     alert("Enter backlink URL to endconsumer website");
     document.Linkformular.backlink.focus();
     return false;
   }

   if(document.Linkformular.spamzahl.value == "")
   {
     alert("Enter Spam-protection");
     document.Linkformular.spamzahl.focus();
     return false;
   }
}