function displayExternal() {
  var lyr = document.getElementById? document.getElementById('display'): document.all? document.all['display']: null;
    if ( window.frames['buffer'] && lyr && typeof lyr.innerHTML != "undefined" ) {
      lyr.innerHTML = window.frames['buffer'].document.body.innerHTML;
    }
}

function zmen(loc) {
	switch (loc){
		case  1: 	document.getElementById('hlavny').src="images/home.jpg";
					document.getElementById('obsah').src="pages/home.htm";
					document.getElementById('podmenu').src="podmenu/home.htm";
					break;
		case  2: 	document.getElementById('hlavny').src="images/sklo.jpg";
					document.getElementById('obsah').src="pages/sklo.htm";
					document.getElementById('podmenu').src="podmenu/sklo.htm";
					break;
		case  3: 	document.getElementById('hlavny').src="images/plasty.jpg";
					document.getElementById('obsah').src="pages/plasty.htm";
					document.getElementById('podmenu').src="podmenu/plasty.htm";
					break;
		case  4: 	document.getElementById('hlavny').src="images/pomocky.jpg";
					document.getElementById('obsah').src="pages/pomocky.htm";
					document.getElementById('podmenu').src="podmenu/pomocky.htm";
					break;
		case  5: 	document.getElementById('hlavny').src="images/pristroje.jpg";
					document.getElementById('obsah').src="pages/pristroje.htm";
					document.getElementById('podmenu').src="podmenu/pristroje.htm";
					break;
		case  6: 	document.getElementById('hlavny').src="images/davkovace.jpg";
					document.getElementById('obsah').src="pages/davkovace.htm";
					document.getElementById('podmenu').src="podmenu/davkovace.htm";
					break;
		case  7: 	document.getElementById('hlavny').src="images/nabytok.jpg";
					document.getElementById('obsah').src="pages/nabytok.htm";
					document.getElementById('podmenu').src="podmenu/nabytok.htm";
					break;
		case  8: 	document.getElementById('hlavny').src="images/kontakt.jpg";
					document.getElementById('obsah').src="pages/kontakt.htm";
					document.getElementById('podmenu').src="podmenu/kontakt.htm";
					break;
		case  9: 	document.getElementById('hlavny').src="images/stolicky.jpg";
					document.getElementById('obsah').src="pages/stolicky.htm";
					document.getElementById('podmenu').src="podmenu/stolicky.htm";
					break;
		default: 	document.getElementById('hlavny').src="images/home.jpg";
					document.getElementById('obsah').src="pages/podmenu0.htm";
					document.getElementById('podmenu').src="podmenu/podmenu0.htm";
					break;
	};
}