function mailOK(mail) {
     reg=/^.+@.+\..{2,4}$/;
     return reg.test(mail);
}

function okno(obr,sirka,vyska,title) {
     handler=window.open(obr,title,"scrollbars=no,status=no,menubar=no,resizable=yes,directories=no,height="+vyska+",width="+sirka);
     return handler;
}

function externalLinks() {

   if (!document.getElementsByTagName) return;

   var anchors = document.getElementsByTagName("a");

   for (var i=0; i<anchors.length; i++) {

     var anchor = anchors[i];

     if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") anchor.target = "_blank";

   }

}


var pomokno = null;