Вариант...
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<style type="text/css">
label{
background-color: #FFFFFF;
}
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(function () {
$('.aria').click(function (event) {
var t=Math.ceil(Math.random()*16777214);
$(this).parent().find('[class ^= "m_"]:visible').hide()
$(this).css({'backgroundColor': '#'+t.toString(16)}).children('[class ^= "m_"]').show()
event.stopPropagation();
})
});
</script>
</head>
<body>
<div class="aria rossia">rossia <label class="m_rossia">rossia</label></div>
<div class="aria india">india <label class="m_india">india</label></div>
<div class="aria shvecia">shvecia <label class="m_shvecia">shvecia</label></div>
<div class="aria polsha">polsha <label class="m_polsha">polsha</label></div>
</body>
</html>