я делал так:
ITEM (display as text escape special ...) в HTML Table Cell Attributes : onClick="Reg_display(this)" class="dtim" onMouseOver="this.style.borderColor='#BDB76B'; this.style.color='#36648B' " onMouseOut="this.style.color='#5F9EA0'; this.style.borderColor='#EEE8AA' "
В регионе:
Static ID (100002)
Region Attributes (style="display:none")

В PAGE:
HTML Header (
<Script Language="JavaScript">
function Reg_display(r_Text){
var s = document.getElementById('100002').style;
if (s.display == '' || s.display == 'none') (s.display = 'block',
r_Text.innerText = 'Скрыть историю')
else (s.display = 'none', r_Text.innerText = 'Показать историю');
}
</Script>

<style>
.dtim{
color: '#5F9EA0';
border-color:#EEE8AA;
border-style: solid;
background-color:#FDF5E6;
font-weight:bold;cursor:hand;
position:relative;right:-50px
}
</style>)