jq.randomUniqueId.js

/**
 * Random unique document ID generator
 * 
 * @param string prefix - Optional
 * @returns string
 * 
 * @author Alexandru Busuioc
 * 
 * MIT License (MIT)
 * 
 * Copyright (c) 2012 Alexandru Busuioc
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
 * and associated documentation files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 * 
 * * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 * 
 * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
(function($){
	if( !$.utils ) $.utils = {};
	$.utils.randUniqueID = function( prefix ){
		var p = ( prefix && prefix.replace(/[^A-Za-z_]+/g, '' ) ) || 'ruid';
		var ruid;
		do { ruid = p + Math.floor( Math.random() * 10000000 ); }
		while ( document.getElementById( ruid ) );
		return ruid;
	};
})(jQuery);