Спойлер в main.tpl

<a href="javascript://" id="tit1" >Спойлер 1</a>
<div style="display:none;" id="con1">Любой контент</div>

<script>
if(getCookie('con1on')) {
$('#con1').slideDown(500);
$('#tit1').toggle(function() {
eraseCookie('con1on');
$('#con1').slideUp(500);
}, function() {
setCookie('con1on', 1, 365);
$('#con1').slideDown(500);
});
} else {
$('#tit1').toggle(function() {
$('#con1').slideDown(500);
setCookie('con1on', 1, 365);
}, function() {
$('#con1').slideUp(500);
eraseCookie('con1on');
});
}</script>

function setCookie(name, value, days) {
 if (days) {
 var date = new Date();
 date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
 var expires = "; expires=" + date.toGMTString();
 }
 else var expires = "";
 document.cookie = name + "=" + value + expires + "; path=/";
}
function getCookie(name) {
 var nameEQ = name + "=";
 var ca = document.cookie.split(';');
 for (var i = 0; i < ca.length; i++) {
 var c = ca[i];
 while (c.charAt(0) == ' ') c = c.substring(1, c.length);
 if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
 }
 return null;
}
function eraseCookie(name) {
 setCookie(name, "", -1);
};