var mouseevents = {

         '#content_portfolio a' : function(e){
		e.onmouseover = function() { show(this.name); }
         },

	'#nav a' : function(e){
		e.onmouseover = function() { nav('content_'+this.id); }
		e.onclick = function() { return(false); }
	}

};

Behaviour.register(mouseevents);