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 motor(kep) {
	var mwin;
	mwin = open(kep,"mwin","toolbar=0,location=0,directories=0,status=0,menubar=0,resizable=1,width=400,height=500");
}

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 kerwin() {
	var kwin;
	kwin = open("keresunk.php","win","toolbar=0,location=0,directories=0,status=0,menubar=0,resizable=1,width=350,height=500");
}