var menu = new Array(9);
var level;

function init(lvl){
	level = lvl;
	for(i = 0 ; i < 9; i++){
		menu[i] = true;
		display(i);
	}
	return;
}

function getObj(name)
{
	if (document.getElementById)
	{
		if (document.getElementById(name)!=null) {
			return document.getElementById(name);			
		}
	}
	else if (document.all)
	{
		if (document.all[name]!=null) {
			return document.all[name];
		}
	}
	else if (document.layers)
	{
		if (document.layers[name]!=null) {
			return document.layers[name];
		}
	}
	return null;
}

function show(id){
	
	layer = getObj(id);	
	layer.style.position = "relative";
	layer.style.display = "";		
	return null;
}

function hide(id){

	layer = getObj(id);
	layer.style.position = 'absolute';			
	layer.style.display = 'none';	
	return null;
	
}

function display(id){
	if(menu[id]) {
		menu[id] = false;							
		hide('drop-down' + id);
		swapImg('nav-btm' + id, level + 'images/nav-btm1.gif');
	}			
	else{				
		menu[id] = true;		
		swapImg('nav-btm' + id, level + 'images/nav-btm2.gif');		
		show('drop-down' + id);
	}
	return;
}

function display2(id){
	if(menu[id]) {
		menu[id] = false;							
		hide('drop-down' + id);
		swapImg('tree' + id, level + 'images/tree-close.gif');
	}			
	else{				
		menu[id] = true;
		swapImg('tree' + id, level + 'images/tree-open.gif');		
		show('drop-down' + id);
	}
	return;
}

function swapImg(id, source) {
	img = new Image();
	img.src = source;		
	document[id].src = img.src;
	return null;
}

function moreInfo(id, type, position) {
        window.location = level + "common/more-info.php?id=" + id + "&type=" + type + "&position=" + position;
}