/*
* Chained - jQuery chained selects plugin
*
* Copyright (c) 2010 Mika Tuupola
*
* Licensed under the MIT license:
*   http://www.opensource.org/licenses/mit-license.php
*
*/
(function($) {
$.fn.chained = function(parent_selector, options) { 
return this.each(function() {
/* Save this to self because this changes when scope changes. */            
var self   = this;
var backup = $(self).clone();
/* Handles maximum two parents now. */
$(parent_selector).each(function() {
$(this).bind("change", function() {
$(self).html($(backup).html());
/* If multiple parents build classname like foo\bar. */
var selected = "";
$(parent_selector).each(function() {
selected += "\\" + $(":selected", this).val();
});
selected = selected.substr(1);
/* Also check for first parent without subclassing. */
/* TODO: This should be dynamic and check for each parent */
/*       without subclassing. */
var first = $(parent_selector).first();
var selected_first = $(":selected", first).val();
$("option", self).each(function() {
/* Remove unneeded items but save the default value. */
if (!$(this).hasClass(selected) && 
!$(this).hasClass(selected_first) && $(this).val() !== "") {
$(this).remove();
}                        
});
/* If we have only the default value disable select. */
if (1 == $("option", self).size() && $(self).val() == "") {
$(self).attr("disabled", "disabled");
} else {
$(self).removeAttr("disabled");
}
});
/* Force updating the children. */
$(this).trigger("change");             
});
});
};
/* Alias for those who like to use more English like syntax. */
$.fn.chainedTo = $.fn.chained;
})(jQuery);
function toggleContacts(id)
{
	var div = document.getElementById("contacts_" + id);
	var lnk = document.getElementById("contacts_show_" + id);
	if (div && lnk)
	{
		if (div.style.display == "none")
		{
			div.style.display = "block";
			lnk.innerHTML = "Скрыть контакты";
		} else
		{
			div.style.display = "none";
			lnk.innerHTML = "Показать контакты";
		}
	} else
		alert("Элементы не найдены!");
}