function generate() {
	var iAddress = document.getElementById('address');
	var iWidth = document.getElementById('width');
	var iHeight = document.getElementById('height');
	if ( iWidth.value == '' ) iWidth.value = '800';
	if ( iHeight.value == '' ) iHeight.value = '500';
	var code = '<iframe src="'+iAddress.value+'?tmpl=empty_page" height="'+iHeight.value+'" width="'+iWidth.value+'"></iframe>';
	document.getElementById('code').value = code;
}

if ( typeof(window.onload) != 'function' ) {
	window.onload = function () {
		var elContent = document.getElementById('layer_content');
		var elMenu = document.getElementById('layer_menu');
		var elFooter = document.getElementById('layer_footer');
		if ( elContent.offsetHeight < elMenu.offsetHeight )
			elFooter.style.marginTop = elMenu.offsetHeight - elContent.offsetHeight + 110 + 'px';
	}
}