influenced dot net

The following seems to work quite well for some AJAXified forms I have (a behaviour.js rule):

'#form_field_id' : function(element){
	element.onkeypress = function(e){
		e = (e)?e:window.event;
		var kc = e.keyCode ? e.keyCode : e.charCode;
		if(kc == 13) {
			do_something();
			return false;
		}
	}
}