function pop_up(url) {
	newWindow = window.open(url, 'name', 'height=570, width=380');
	if (window.focus) {
		newWindow.focus()
	}
	return false;
}

var myrules = {
  '.view-map' : function(el){
    el.onclick = function(){
      return pop_up('../includes/map-and-directions.html');
    }
  }
}

Behaviour.register(myrules);