$(document).ready(function(){
$('body').append('<div id="black-box"></div>');

var allheight = $(document).height();
var windowheight = $(window).height()/2;

$('#online-zayavka-item').hover(function(){
$(this).toggleClass('hov');
});
$('#online-zayavka-item').click(function(){
show_zajavka_form();
});

$('#online-zajavka-form h2').each(function() {show_zajavka_form();});
$('#online-zajavka-form .error_message').each(function() {show_zajavka_form();});

$('#online-zajavka a').click(function() {
show_zajavka_form();
return false;
});

$('#online-zajavka-close').click(function() {
$('#online-zajavka-form').fadeOut("fast");
$('#black-box').fadeOut("fast");
});

function show_zajavka_form(){
var allscroll = $(document).scrollTop();
$('#black-box').css({
backgroundColor: "#000",
opacity: "0.9",
height: allheight
}).fadeIn("fast");
$('#online-zajavka-form').css({
top: allscroll + windowheight
}).fadeIn("fast");
}

});