function prepis(id,predmet)
{
  str="dcon"+id; pd=id;
  with (document.discussionform)
  {
    contents.value="";
    subject.value="Re: "+predmet;
    pid.value=pd;
    location="#new";
    contents.focus();
  }
}

function IsMail(hodnota) 
{
  re=new RegExp("^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z]{2,3})$");
  if (re.test(hodnota)) return true;
    else return false;
}

function chsf()
{
  var err="";
  with (document.searchform)
  {
    if (p.value=="") err+="Zabudli ste zadať hľadaný výraz";
    else
    if (p.value.length<3) err+="Hľadaný výraz musí obsahovať min. 3 znaky";
  }
  if (err!="")
  {
    window.alert(err);
    return false;
  } else return true;
}

function chdf()
{
  var err="";
  with (document.discussionform)
  {
    if (name.value=="") err+="- meno a priezvisko\n";
    if (email.value!="") if (!IsMail(email.value)) err+="- emailovú adresu v správnom tvare\n";
    if (contents.value=="") err+="- príspevok\n";
  }
  if (err!="")
  {
    window.alert("Zabudli ste napísať:\n"+err);
    return false;
  } 
  else 
  { 
    document.discussionform.sb.disabled=true;
    return true;
  }
}

function chlf()
{
  var err="";
  with (document.loginform)
  {
    if (l.value=="") err+="- login\n";
    if (p.value=="") err+="- heslo\n";
  }
  if (err!="")
  {
    window.alert("Zabudli ste zadať:\n"+err);
    return false;
  } else return true;
}

function filter1() 		{ with (event) if (keyCode==34 || keyCode==36 || keyCode==39 || keyCode==92 || keyCode==59) returnValue=false; }
function filter3() 		{ with (event) if ((keyCode>47 && keyCode<58) || (keyCode==46) || (keyCode==45) || (keyCode==95) || (keyCode==13) || (keyCode>63 && keyCode<91) || (keyCode>96 && keyCode<123)) ; else returnValue=false; }