var myrules = {
	'.popup' : function(el){
		var href = el.getAttribute('href');
		if (href){
			el.onclick    = function(){ window.open(href,'popup'); return false;}
			el.onkeypress = function(){ window.open(href,'popup'); return false;}
		}
	}
};
Behaviour.register(myrules);
var myrules = {
	'.popup2' : function(el){
		var href = el.getAttribute('href');
		if (href){
			el.onclick    = function(){ window.open(href,'back','resizable=yes,status=yes,scrollbars=yes,width=400,height=510,'); return false;}
			el.onkeypress = function(){ window.open(href,'back','resizable=yes,status=yes,scrollbars=yes,width=400,height=510,'); return false;}
		}
	}
};
Behaviour.register(myrules);