/* classes */
var ZebraTables = new Class({
	//initialization
	initialize: function(table_class) {

		//add table shading
		$$('table.' + table_class + ' tr').each(function(el,i) {

			//do regular shading
			var _class = i % 2 ? 'even' : 'odd'; el.addClass(_class);
		});
	}
});