// JavaScript Document

//MENU OPEN/CLOSE FUNCTIONALITY
function expandMenu(id){//opens or closes the submenus
	if (document.getElementById(id).style.display == "block")
		{document.getElementById(id).style.display = "none";}
	else {document.getElementById(id).style.display = "block";}
}

//opens a menu on load based on the value of "id" in the querystring
function menuPersist(){
	querystr = new Querystring();
	expandMenu(querystr.get("id"))
	expandMenu(querystr.get("id2"))
}
////////////////////////////////////////////////////////////////

/* Client-side access to querystring name=value pairs
	Version 1.2.3
	22 Jun 2005
	Adam Vandenberg
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = new Object()
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,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
}

function showElement(element){
	document.getElementById("general").style.display = "none";
	document.getElementById("gallery").style.display = "none";
	document.getElementById("specs").style.display = "none";

	document.getElementById(element).style.display = "block";
}