var menu_speed = 8;

var menu_initialized = false;

var menu_current = new Array();

var menu_hide_timeout = 0;

var menu_anim_timeout = 0;



var menu_anim = new Array();

function menu_anim_step(){

	menu_anim_timeout = window.setTimeout("menu_anim_step();", 10);

	for (var i=0; i<menu_anim.length; i++)

	{

		if (menu_anim[i]==null)continue;

		menu_anim[i].height += menu_anim[i].step;

		var h = menu_anim[i].height;

		var n = menu_anim[i].node;

		if (menu_anim[i].step<0)

		{

			if (menu_anim[i].height<=menu_anim[i].limit){

				h = menu_anim[i].limit;

				menu_anim[i] = null;

			}

		}

		else {

			if (menu_anim[i].height>=menu_anim[i].limit){

				h = menu_anim[i].limit;

				menu_anim[i] = null;

			}

		}

		n.style.height = h+"px";

		if (h==0)

		{

			n.style.height = "1px";

			n.style.visibility = 'hidden';

		}

		else {

			n.style.visibility = 'visible';

		}

	}

}

menu_anim_step();



function menu_render(id, items){

	var div = document.createElement("div");

	var html = "<div class='menu_wrapper'><table celpadding='0' cellspacing='0' border='0' width='100%'>";

	for (var j=0; j<items.items.length; j++)

	{

		if (items.items[j]['sub']){

			html += '<tr><td onmouseover="this.className=\'over\'; menu_over(this, \''+id+':'+j+'\');" onmouseout="this.className=\'\'; menu_out(this, \''+id+':'+j+'\');" onclick="menu_click(\''+id+':'+j+'\');"><div id="sub">&nbsp;&nbsp;&nbsp;'+items.items[j].title+' </div></td></tr>';

			items.items[j].node = menu_render(id+':'+j, items.items[j]['sub']);

			items.items[j].parent = div;

		}

		else {

			html += '<tr><td onmouseover="this.className=\'over\'; menu_over(this, \''+id+':'+j+'\');" onmouseout="this.className=\'\'; menu_out(this, \''+id+':'+j+'\');" onclick="menu_click(\''+id+':'+j+'\');">&nbsp;&nbsp;&nbsp;'+items.items[j].title+'</td></tr>';

		}

	}

	html += '</table></div>';

	if (items.className)

	{

		div.className = "menu "+items.className;

	}

	else {

		div.className = "menu";

	}

	div.style.position = 'absolute';

	div.style.overflow = 'hidden';

	div.style.left = '250px';

	div.style.top = '150px';

	div.style.visibility = 'hidden';

	if (id.indexOf(':')==-1)

		div.style.height = '1px';

	div.innerHTML = html;

	document.body.appendChild(div);

	return div;

}



function menu_init(){

	if (menu_initialized)return;

	menu_initialized = true;



	if (!menu_data)return;



	for (var i in menu_data)

	{

		menu_data[i].node = menu_render(i, menu_data[i]);

	}

}



function menu_node_pos(n){

	if (n.offsetParent)

	{

		var pos = menu_node_pos(n.offsetParent);

		pos.x+=n.offsetLeft;

		pos.y+=n.offsetTop;

		return pos;

	}

	return {x:n.offsetLeft, y:n.offsetTop};

}



function menu_click(id){

	var cur = menu_data;

	var tmp = id.split(/:/);

	var path = new Array();

	for (var i=0;i<tmp.length;i++)

	{

		if (!cur||!cur[tmp[i]]){

			break;

		}

		path[i] = cur[tmp[i]];

		if (!cur[tmp[i]].items)

		{

			if (cur[tmp[i]].sub)

				cur = cur[tmp[i]].sub.items;

			else

				break;

		}

		else

			cur = cur[tmp[i]].items;

	}

	if (path.length==0)return;

	var item = path[path.length-1];

	if (item.url){

		window.location = item.url;

	}

}



function menu_over(n, id){

	if (!menu_initialized)return;



	var menu_item = null;

	var cur = menu_data;

	var tmp = id.split(/:/);

	var path = new Array();

	for (var i=0;i<tmp.length;i++)

	{

		if (!cur||!cur[tmp[i]]){

			break;

		}

		path[i] = cur[tmp[i]];

		cur = cur[tmp[i]].items;

	}



	window.clearTimeout(menu_hide_timeout);



	for (var i=path.length; i<menu_current.length; i++ )

	{

		if (menu_current[i]==null)break;

		if (menu_current[i].node){

			if (i==0)

				menu_hide_first(menu_current[i]);

			else

				menu_current[i].node.style.visibility = 'hidden';

		}

		menu_current[i] = null;

	}



	var i = path.length-1;

	while (i>=0)

	{

		if (menu_current[i])

		{

			if (menu_current[i]==path[i])break;

			if (menu_current[i].node){

				if (i==0)

					menu_hide_first(menu_current[i]);

				else

					menu_current[i].node.style.visibility = 'hidden';

			}

			menu_current[i] = null;

		}

		i--;

	}

	i++;



	if (i==path.length)return;

	while (i<path.length)

	{

		if (i==path.length-1 && n && path[i].node)

		{

			var pos = menu_node_pos(n);

			if (path[i].offsetLeft)

			{

				pos.x+=path[i].offsetLeft;

			}

			if (i==0)

			{

				path[i].node.style.left = pos.x+'px';

				path[i].node.style.top = pos.y+n.offsetHeight+2+'px';

			}

			else {

				path[i].node.style.left = pos.x+n.offsetWidth-1+'px';

				path[i].node.style.top = pos.y+'px';

			}

		}

		if (path[i].node){

			if (i==0)

				menu_show_first(path[i]);

			else

				path[i].node.style.visibility = 'visible';

		}

		menu_current[i] = path[i];

		i++;

	}

}



function menu_out(n, id){

	if (!menu_initialized)return;

	window.clearTimeout(menu_hide_timeout);

	menu_hide_timeout = window.setTimeout("menu_hide();", 300);

}



function menu_hide(){

	for (var i=0; i<menu_current.length; i++ )

	{

		if (menu_current[i]==null)break;

		if (menu_current[i].node)

		{

			if (i==0)

				menu_hide_first(menu_current[i]);

			else

				menu_current[i].node.style.visibility = 'hidden';

		}

		menu_current[i] = null;

	}

}



function menu_hide_first(n){

	var anim = null;

	var pos = menu_anim.length;

	for (var i=0; i<menu_anim.length; i++)

	{

		if (!menu_anim[i])pos = i;

		if (menu_anim[i]&&menu_anim[i].node==n.node)

		{

			anim = menu_anim[i];

			break;

		}

	}

	if (anim==null)

	{

		anim = {node: n.node};

		menu_anim[pos] = anim;

	}

	anim.height = n.node.offsetHeight;

	n.node.style.height = anim.height+"px";

	anim.limit = 0;

	anim.step = -menu_speed;

}

function menu_show_first(n){

	var anim = null;

	var pos = menu_anim.length;

	for (var i=0; i<menu_anim.length; i++)

	{

		if (!menu_anim[i])pos = i;

		if (menu_anim[i]&&menu_anim[i].node==n.node)

		{

			anim = menu_anim[i];

			break;

		}

	}

	if (anim==null)

	{

		anim = {node: n.node};

		menu_anim[pos] = anim;

	}

	anim.height = n.node.offsetHeight;

	n.node.style.height = anim.height+"px";

	anim.limit = n.node.scrollHeight+10;

	anim.step = menu_speed;

}