var context, isDiffusion, rClick, showNode, keyUp;
try {
	context = window.external.getContext();
} catch(e) {
}

if(rClick == null) {
	rClick = function()
	{
	}
}

if(showNode == null) {
	showNode = function()
	{
	}
}

if(keyUp == null) {
	keyUp = function()
	{
	}
}


isDiffusion = context == null;
var onLoadActions = new Array();
var onResizeActions = new Array();
var isoDocumentLoaded = false;

// for onResizeActions to know xhen execute 
// if the page has been already reloaded to
// avoid reload n times
var alreadyReloaded = false;

function getAccessory(name, def)
{
	var a = accessories[name]
	if(a == null) return def;
	return a;
}

function executeLoadActions()
{
	isoDocumentLoaded = true;
	alreadyReloaded = false;
	var i;
	if(!isDiffusion) {
		document.body.oncontextmenu = rClick;
		document.body.onclick = showNode;
		document.body.onkeydown = keyUp;
	}
	for(i=0;i < onLoadActions.length;i++) {
		var action = onLoadActions[i];
		if(typeof(action) == "function") {
			action();
		}
	}
	onLoadActions = new Array();
}

window.onload = executeLoadActions;

function addLoadAction(action)
{
	if (isoDocumentLoaded)
	{
		if (typeof(action) == "function")
			action();
	}
	else
		onLoadActions[onLoadActions.length] = action;
}

function executeResizeActions()
{
	var i;
	for(i=0;i < onResizeActions.length;i++)
	{
		var action = onResizeActions[i];
		if(typeof(action) == "function")
		{
			action();
		}
	}
}

function addResizeActions(action)
{
	//alert("addResizeActions = "+action)
	onResizeActions[onResizeActions.length] = action;
}

window.onresize = executeResizeActions;

// client size

function getBodyClientSize()
{
	// see http://www.quirksmode.org/js/winprop.html
	var size = new Object();
	if (self.innerHeight)
	{
		// netscape	
		size.height = self.innerHeight;
		size.width = self.innerWidth;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
	{
		// DOCTYPE
		size.height = document.documentElement.clientHeight;
		size.width = document.documentElement.clientWidth;
	}
	else if (document.body)
	{
		// IE without DOCTYPE
		size.height = document.body.clientHeight;
		size.width = document.body.clientWidth;
	}
	return size;
}

var fixPreviewUrl;
function fixUrl(url)
{
	if(isDiffusion || fixPreviewUrl == null) {
		return url;
	}
	return fixPreviewUrl(url);
}