//普通产品目录
var aaa = document.getElementsByTagName('div');
	var j =0;
	for(i=0;i<aaa.length;i++)
	{
		if(aaa[i].id.indexOf('submenu_')>-1 && j ==0 )		{
			aaa[i].style.display = '';
			break;
		}
	}function showsubmenu(sid)
{
	var aaa = document.getElementsByTagName('div');
	var j =0;
	for(i=0;i<aaa.length;i++)
	{
		if(aaa[i].id.indexOf('submenu_')>-1)			aaa[i].style.display = 'none';
	}	var bbb = document.getElementById("submenu_" + sid );
	bbb.style.display= '';
}