function swap(obj){
		   if(document.getElementById){
			   par=obj.parentNode;
			   cls=par.className=="nav" ? "navon":"nav";
			   par.className=cls;
		    }
	   }

	   function swapT(obj){
		   if(document.getElementById){
			   par=obj.parentNode;
			   cls=par.className=="navLeft" ? "navLeftOn":"navLeft";
			   par.className=cls;
		    }
	   }