<script>
jQuery(document).ready(function() {
jQuery("#heyhey").change(function() {
if(jQuery(this).find("option:selected").val()) {
jQuery(".vybor").hide();
}
});
});
</script>
<a class="k_nazad" href="javascript:void(0)" onclick="showHide('vybor')"><span class="nazad_k">Назад</span></a>
<script type="text/javascript">
function showHide(element_id) {
if (document.getElementById(element_id)) {
var obj = document.getElementById(element_id);
if (obj.style.display != "none") {
obj.style.display = "none";
}
else obj.style.display = "block";
}
else alert("Элемент с id: " + element_id + " не найден!");
}
</script>