function sw_menu(id_name,flag){
	if(flag=='on'){
		document.getElementById(id_name).src="./images/menu/"+id_name+"_on.gif";
	}else if(id_name){
		document.getElementById(id_name).src="./images/menu/"+id_name+".gif";
	}
}

function sw_menu_s(id_name,flag){
	if(flag=='on'){
		document.getElementById(id_name).src="../images/menu/"+id_name+"_on.gif";
	}else if(id_name){
		document.getElementById(id_name).src="../images/menu/"+id_name+".gif";
	}
}
function mail_ad(name){
	my_antname="info";
	domain="49610buta.com";
	this.location.href="mailto:"+my_antname+"@"+domain+"?subject="+name; 
}