function image (image_name, image_where) 
{ 
new_img = new Image; 
new_img.src = "images/button" + image_where + ".gif"; 
document [image_name].src = new_img.src; 
delete new_img;
}

function CheckItCon(what) {
  if (what.name.value=='' || what.email.value=='' || what.text.value=='' || !TestEmail(what.email) || !what.member.value || what.member.value==0 || what.section.value==0) {
    my_alert = "Pri vypĺňaní kontaktného formulára ste urobili následovné chyby:\n\n";
    if (what.name.value=='') my_alert = my_alert + "Nezadali ste meno a priezvisko.\n";
    if (what.email.value=='') my_alert = my_alert + "Nezadali ste e-mailovú adresu\n";
    if (what.email.value!='' && !TestEmail(what.email)) my_alert = my_alert + "Nezadali ste správny formát e-mailovej adresy.\n";
    if (!what.member.value || what.member.value==0) { my_alert = my_alert + "Nezvolili ste predstaviteľa.\n"; what.member.value = 0; }
    if (what.section.value==0) my_alert = my_alert + "Nezvolili ste oblasť.\n";
    if (what.text.value=='') my_alert = my_alert + "Nezadali ste text správy.\n";

    alert (my_alert); 
  }
  else {
    what.submit(); 
  }
}

function CheckItReg(what) {
  if (what.name.value=='' || what.email.value=='' || !TestEmail(what.email) || !what.office.value || what.office.value==0) {
    my_alert = "Pri vypĺňaní formulára ste urobili následovné chyby:\n\n";
    if (what.name.value=='') my_alert = my_alert + "Nezadali ste meno a priezvisko.\n";
    if (what.email.value=='') my_alert = my_alert + "Nezadali ste e-mailovú adresu\n";
    if (what.email.value!='' && !TestEmail(what.email)) my_alert = my_alert + "Nezadali ste správny formát e-mailovej adresy.\n";
    if (!what.office.value || what.office.value==0) { my_alert = my_alert + "Nezvolili ste okresnú kanceláriu.\n"; what.office.value = 0; }

    alert (my_alert); 
  }
  else {
    what.submit(); 
  }
}

function TestEmail (elmnt) {
    var re = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;
    var valid = re.exec(elmnt.value);
    return valid
}

function gallery (value) { 
    window.open("gallery.php?w="+value,"gallery","width=20,height=20,left=15,top=15,menubar=no,status=no,toolbar=no,resizable=no,scrollbars=no");
}