/*
 *Site Navigation Menus
 */
 
var current_menuid = new Number();

function open_submenus(obj, menuid) {

	if (current_menuid != 0) hide_submenus();
	if (!document.getElementById('div_sub_menus_' + menuid)) return;

	var posx = obj.offsetLeft;
	var posy = obj.offsetTop;
	var obj_parent 	= obj.offsetParent;

	while (obj_parent) {
		if (obj_parent) {
			posx += obj_parent.offsetLeft;
			posy += obj_parent.offsetTop;
			obj_parent = obj_parent.offsetParent;
		} else {
			break;
		}
	}
	document.getElementById('div_sub_menus_' + menuid).style.display = 'block';
	document.getElementById('div_sub_menus_' + menuid).style.left = posx;
	document.getElementById('div_sub_menus_' + menuid).style.top  = posy + 20;
	current_menuid = menuid;
}

function hide_submenus() {
	document.getElementById('div_sub_menus_' + current_menuid).style.display = 'none';
}