/* Only set closed if js-enabled */
document.getElementsByTagName('html')[0].className = 'isjs';

function tog(dt)
{
var display, dd=dt;
/* get dd */
do{ dd = dd.nextSibling } while(dd.tagName!='DD');
toOpen =!dd.style.display;
dd.style.display = toOpen? 'block':''
dt.getElementsByTagName('span')[0].innerHTML
= toOpen? '-':'+' ;
}