function toggle(obj) {
	// Moz. or IE
	var sibling=(obj.nextSibling.nodeType==3)? obj.nextSibling.nextSibling : obj.nextSibling;
	// hide or show
	if(sibling.style.display=='' || sibling.style.display=='block') {
		sibling.style.display='none';
	    obj.firstChild.firstChild.data='[+]';
	    }
	else {
		sibling.style.display='block';
	    obj.firstChild.firstChild.data='[-]';
	    }
	}
//
function initCollapse() {
	var oDT=document.getElementById('content').getElementsByTagName('dt');
	for (var i=0; i < oDT.length; i++) {
		oDT[i].onclick=function() {toggle(this)};
	    var oSpan=document.createElement('span');
	    var sign=document.createTextNode('[-]');
	    oSpan.appendChild(sign);
	    oDT[i].insertBefore(oSpan, oDT[i].firstChild);
	    oSpan.style.fontFamily='monospace';
	    oSpan.style.paddingRight='0.5em';
	    oDT[i].style.cursor='pointer';
	//remove 'if' to collapse all of them
	//if(i==1 || i==2)
	    {toggle(oDT[i])};
		}
	oDT=null;
	}
	window.onload=function() {if(document.getElementById && document.createElement) {initCollapse();}}