function showsubmenu2(e)
{
	
	var tid=e.id.replace('m_','s_');
	if($(tid)){
	$$('.nav_position div').each(function(e){e.hide();});
	//$(tid).show();
	new Effect.BlindDown($(tid),{duration:0.5});
	}
			
}


function showsubmenu()
{
	$$('#mainmenu a').invoke("observe", "mouseover", function() {
		showsubmenu2(this) });

}