function doClick(o,a){
		//alert(o.className);
	if(o.className=="nav_long" || o.className=="nav_onlong")
	{
		o.className="nav_onlong";	
	}
	else
	{
		 o.className="nav_onlong";
	}
	//alert(o.className);
	 var j;
	 var id;
	 var e;
	
	for(var i=1;i<=9;i++)
	{
		id ="nav"+i;
		j = document.getElementById(id);
		e = document.getElementById("sub"+i);
		if(id != o.id)
		{
			
			j.className="nav_link";
			e.style.display = "none";
	   }
	   else
	   {
			e.style.display = "block";
	   }
	}
}