function findPosX(obj) {
	var curleft = 0;
	if(obj.offsetParent)
		while(1) 
		{
		  curleft += obj.offsetLeft;
		  if(!obj.offsetParent)
			break;
		  obj = obj.offsetParent;
		}
	else if(obj.x)
		curleft += obj.x;
	return curleft;
}

function findPosY(obj) {
	var curtop = 0;
	if(obj.offsetParent)
		while(1)
		{
		  curtop += obj.offsetTop;
		  if(!obj.offsetParent)
			break;
		  obj = obj.offsetParent;
		}
	else if(obj.y)
		curtop += obj.y;
	return curtop;
}

function f_nav(v_nav_id,v_nav_action) {
	if (v_nav_action == 'hide') {
		if (v_nav_list.indexOf(',') > 0) {
			v_nav_list_split = v_nav_list.split(',');
			for (var v_nav_list_loop = 0; v_nav_list_loop < v_nav_list_split.length; v_nav_list_loop++) {
				if (v_nav_list_split[v_nav_list_loop].length > 0) {
					document.getElementById(v_nav_list_split[v_nav_list_loop]).style.display = 'none';
				}
			}
		}
	}
	if (v_nav_action == 'show') {
		f_nav('','hide');
		if (v_nav_id.length > 0) {
			document.getElementById(v_nav_id).style.display = 'block';
			document.getElementById(v_nav_id).style.position = 'absolute';
			document.getElementById(v_nav_id).style.zIndex = '1';
			document.getElementById(v_nav_id).style.top = '163px';
			document.getElementById(v_nav_id).style.left = findPosX(document.getElementById(v_nav_id + 'link'))+5 + 'px';
		}
	}
}