function checkZone(codeZone){
	var handlerFunc = function(t) {
		var ajFoc = document.getElementById('ajaxFocus');
		ajFoc.innerHTML = t.responseText;
		ajFoc.style.display = 'block';
		new Effect.Highlight(ajFoc, {startcolor:'#004A90', endcolor:'#D1E1EE', duration : .4});
	}
	var errFunc = function(t) { alert('Error ' + t.status + ' -- ' + t.statusText);}
	new Ajax.Request('/ajax-focus/'+codeZone.substr(1,codeZone.length-1), {method:'get', onSuccess:handlerFunc, onFailure:errFunc});
}