function preload() {
if (document.getElementById) {  // DOM3 = IE5, NS6
document.getElementById('hidepage').style.visibility = 'hidden';
}
else {
if (document.layers) {  // Netscape 4
document.hidepage.visibility = 'hidden';
}
else {  // IE 4
document.all.hidepage.style.visibility = 'hidden';
      }
   }
}

function kiswin(kep) {
	var win;
	win = open(kep,"win","toolbar=0,location=0,directories=0,status=0,menubar=0,resizable=1,width=780,height=550");
}

function validate_form() {
	var msg = "";
	var err = new Array();
	if (document.urlap.nev.value < 2) { err[0] = "Kérem adja meg a nevét!\n"; }
	if (document.urlap.tel.value < 2) { err[1] = "Kérem adja meg a telefonszámát!\n"; }
	if (document.urlap.telep.value < 2) { err[1] = "Kérem adja meg a települést!\n"; }
	if (document.urlap.mail.value < 2) { err[2] = "Kérem adja meg az e-mail címét!\n"; }
	for (i=0;i<err.length;i++) {
		if (err[i]) { msg += err[i]; }
	}
	if (msg == "") {
		document.urlap.submit();
	} else {
		alert(msg);
	}
}

function hozzaad() {
	var had;
	had = open("termek.html","had","toolbar=0,location=0,directories=0,status=1,menubar=0,resizable=0,width=530,height=250");
}

function add_termek() {
	var str = document.getElementById('t_nev').value + "&nbsp;&nbsp;" + document.getElementById('t_sz').value + "X" + document.getElementById('t_m').value + "&nbsp;&nbsp;" + document.getElementById('t_szin').value + "&nbsp;&nbsp;" + document.getElementById('db').value + "<br>";
	opener.document.getElementById('send_temp').value += str;
	var str2 = document.getElementById('t_nev').value + "  " + document.getElementById('t_sz').value + "X" + document.getElementById('t_m').value + "  " + document.getElementById('t_szin').value + " " + document.getElementById('db').value + " db";
	opener.document.getElementById('temp').value = str2;
	opener.add2();
}

function add2() {
	document.urlap.termekek.options[document.urlap.termekek.options.length] = new Option(document.urlap.temp.value,0);
}