function ujablak(http_cime, X_meret, Y_meret, fejlec) {
if ( typeof(fejlec) != "string") { fejlec="........................................."}
xx=window.open("", "","width="+X_meret+",height="+Y_meret);
xx.document.write(''+fejlec+'');
xx.document.write('');
xx.document.write('
');
}