/* ASPItalia.com BlackAthena Javascript Library codename 'squizzy'
Copyright 2006 ASPItalia.com - All rights reserved
*/
var ASPItalia = new Object(); //namespace

ASPItalia.TabLayers = function(Layers, firstPanel)
{
	this.lastPanelId = firstPanel;
	this.layers = Layers;

	this.ShowPanel = function (id)
	{
		for (var i = 0; i< this.layers.length; i++)
		{
			if (this.layers[i][0] == id)
			{
				this.show(id);
				this.layers[i][2] = 1;
				if (this.layers[i][1] != null)
					this.LoadPanel(id, this.layers[i][1] + '&dt=' + new Date().getDate());
			}
			else
			{
				this.hide(this.layers[i][0]);
				this.layers[i][2] = 1;
			}
		}

		this.lastPanelId = id;
	}

	this.RestorePanel = function ()
	{
		this.ShowPanel(this.lastPanelId);
	}

	this.show = function (id)
	{
		document.getElementById(id).style.display = 'block';
		document.getElementById(id + '_button').className = id + '_button_active';
	}

	this.hide = function (id)
	{
		document.getElementById(id).style.display = 'none';
		document.getElementById(id + '_button').className = '';
	}

	this.LoadPanel = function (id, url)
	{
		try {
			this.SendRequest(id, url);
		}
		catch (er) {
			this.OnError(id, er);
	    }
	}

	this.SendRequest = function (id, url)
	{
		var request;
		var data = null;

		// IE
		if (navigator.userAgent.indexOf('MSIE') > 0)
		{
			request = new ActiveXObject("Microsoft.XMLHTTP");
			// Avvio operazione asincrona
			request.Open("GET", url + "&dt=" + new Date(), true);
		}
		else
		{
			request = new XMLHttpRequest();
			request.open('GET', url, true, null, null);
		}

		request.onreadystatechange = function()
		{
			if (request.readyState == 4)
			{
			    try {
			        document.getElementById(id).innerHTML = request.responseText;
			        /*document.getElementById(id).focus();*/
			    }
			    catch (er) {
			        OnError(id, er);
			    }
		    }
		}
		request.send(data);
	}

	this.OnError = function (id, er)
	{
		document.getElementById(id).innerHTML = er.message;
	}
}