function showSubMenu(menu_id ) {
	var submenu = $("subitem_"+menu_id);
	var parentmenu = $("parent_"+menu_id);
	var is_visible = submenu.style.display == 'block';
	submenu.style.display = is_visible ? "none" : "block";
	if(is_visible)
		$("parent_"+menu_id).removeClassName('selected')
	else
		$("parent_"+menu_id).addClassName('selected')
	//parentmenu.style.background = is_visible ? "url('/proxia_mvc/www/gtsystems/public/images/bg-li.png') no-repeat" : "url('/proxia_mvc/www/gtsystems/public/images/bg-li-selected.png') no-repeat";
}

function showInquiry() {
	var inquiry = $("Inquiry_table");
	var is_visible = inquiry.style.display == 'block';
	inquiry.style.display = is_visible ? "none" : "block";
	inquiry.style.background = !is_visible ? "url('/proxia_mvc/www/gtsystems/public/images/bg-li-inquiry.jpg')  no-repeat" : "url('/proxia_mvc/www/gtsystems/public/images/bg-li-inquiry.jpg') no-repeat";
}