/**

  * XML Web generátor – program na generování webových stránek

  * Copyright © 2012 František Kučera (frantovo.cz)

  * 

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  * 

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  * 

  * You should have received a copy of the GNU General Public License

  * along with this program.  If not, see <http://www.gnu.org/licenses/>.

  */

 /**

  * XML Web generátor – jmenný prostor 

  */

 var xwg = { 

 	/**

 	 * Zašifruje/dešifruje obsah elementu pomocí Rot13.

 	 * @param id ID elementu, jehož text chceme změnit.

 	 */

 	rot13: function(id) {

 		var e = document.getElementById(id);

 		e.textContent = e.textContent.rot13();

 	}

 };

 /**

  * Vrací hodnotu textového řetězce zašifrovanou/dešifrovanou algoritmem Rot13 

  */

 String.prototype.rot13 = function() {

 	return this.replace(/[a-zA-Z]/g, function(z) {

 		return String.fromCharCode((z <= "Z" ? 90 : 122) >= (z = z.charCodeAt(0) + 13) ? z : z - 26);

 	});

 };