var category_button = 0;
//var choosed_language;

function get_countries() {

index = $('s_languages').selectedIndex;

//$('choosed_language').innerHTML = $('s_languages').options[index].innerHTML;

reset_countries();
reset_cities();
reset_schools_categories();
reset_schools();
reset_categories();
reset_courses();

new Ajax.Updater('countries', 
'/inform/get_countries.php', {
method: 'get',
parameters: {id: $('s_languages').getValue() }
});

}

function get_cities() {

index = $('s_countries').selectedIndex;

//$('choosed_country').innerHTML = $('s_countries').options[index].innerHTML;

reset_cities();
reset_schools_categories();
reset_schools();
reset_categories();
reset_courses();

new Ajax.Updater('cities',
'/inform/get_cities.php', {
method: 'get',
parameters: {id: $('s_countries').getValue() }
});
}

function get_schools_categories() {

reset_schools();
reset_categories();
reset_courses();

new Ajax.Updater('schools_categories',
'/inform/get_schools_categories.php', {
method: 'get'
});

}

function get_schools(mode) {

if (mode == "city")
	set_menu_s_c('s');

reset_schools();
reset_courses();

new Ajax.Updater('schools',
'/inform/get_schools.php', {
method: 'get',
parameters: {id: $('s_cities').getValue(), mode: mode }
});

}

function get_categories(mode) {

set_menu_s_c('c');

reset_schools();
reset_categories();
reset_courses();

new Ajax.Updater('categories',
'/inform/get_categories.php', {
method: 'get',
parameters: {mode: mode }
});

}

function get_courses(mode) {

if (mode == 'city')
	c_id = ""

if (mode == 'cat')
	c_id = $('s_category').getValue();


new Ajax.Updater('courses',
'/inform/get_courses.php', {
method: 'get',
parameters: {
c_id: c_id,
s_id: $('s_schools').getValue(), 
mode: mode }
});

}


function reset_countries() {

$('countries').innerHTML = " ";

}

function reset_cities() {

$('cities').innerHTML = " ";

}

function reset_schools() {

$('schools').innerHTML = " ";

}

function reset_categories() {

$('categories').innerHTML = " ";

}

function reset_schools_categories() {

$('schools_categories').innerHTML = " ";

}

function reset_courses() {

$('courses').innerHTML = " ";

}

function reset_schools_categories() {

$('schools_categories').innerHTML = " ";

}

function reset_menu_s_c(mode) {

$('menu_s_c').innerHTML = " ";

get_schools_categories();

}

function set_menu_s_c(mode) {

reset_schools_categories();

if (mode == 's') {
	$('menu_s_c').innerHTML = '&nbsp;&nbsp;<span onclick="reset_menu_s_c(\'' + mode + '\')"> Menu</span> ';
}

if (mode == 'c') {
	$('menu_s_c').innerHTML = '&nbsp;&nbsp; <span onclick="reset_menu_s_c(\'' + mode + '\')"> Menu</span> ';
}

}