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';
    toggle(oDT[i]);
	}
oDT=null;
}

function togglespec(n,page) {
var oDT=document.getElementById('content').getElementsByTagName('dt');
toggle(oDT[n]);
window.location=page;
}

function Querystring(qs) { // optionally pass a querystring to parse
	this.params = new Object();
	this.get=Querystring_get;
	
	if (qs == null)
		qs=parent.location.search.substring(1,parent.location.search.length);

	if (qs.length == 0) return

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ');
	var args = qs.split('&'); // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=');
		var name = unescape(pair[0]);

		if (pair.length == 2)
			value = unescape(pair[1]);
		else
			value = name;
		
		this.params[name] = value;
	}
}

function Querystring_get(key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	
	return value;
}

window.onload=function() {if(document.getElementById && document.createElement) {initCollapse();}	var qs = new Querystring();	var n = qs.get("n"); var q = qs.get("ques");	if ((n != null) && (q != null))	{togglespec(n,'#' + q);}}