function topon(atarget)
{
	document.getElementById("topmenu"+atarget).style.cssText = "background:url(http://static.bengou.com/images2/index.png) no-repeat -124px -10px;";
}
function topout(atarget)
{
	document.getElementById("topmenu"+atarget).style.cssText = "background:url(http://static.bengou.com/images2/index.png) no-repeat -29px -10px";
}