<!--

function zamen(nazev_obr,novy_obr)
{document.images[nazev_obr].src="img\/"+novy_obr;}

function OpenWindow(name, url, x, y,mode){
	if (mode==1){
		scrh = screen.height/2-100;
		scrw = screen.width/2-150;
		windowprops = ' scrollbars=no, resizable=no,';
		windowprops += ",top="+scrh+",left="+scrw;
	}else{
		windowprops	= " "+mode;
	}
	okno = window.open( url , name, 'toobar=no, location=no, directories=no, status=no, , copyhistory=no, width='+x+',height='+y+windowprops+'');
	okno.focus();
}

<!-- 
function Potvrdit2() {
 if (confirm ("Opravdu to chcete smazat?")) {
	 return true;
 }
 else {
	 return false;
 } 
}
// -->


function koment_validate(form) {
if (form.kn_name.value.length<1) {alert("Zadejte jméno."); form.kn_name.focus(); return false;}
if (form.kn_predmet.value.length<1) {alert("Zadejte nadpis."); form.kn_predmet.focus(); return false;}
if (form.kn_text.value.length<1) {alert("Co chcete vlastně poslat?"); form.kn_text.focus(); return false;}
if (form.kn_text.value.length>3000) {alert("Příliš dlouhé! Kdo to by to měl číst.."); form.kn_text.focus(); return false;}
return true; 
}