// utility functions for external resource loading with onload/onreadystatechange events

function viper_load_js_stack(resources,index)
{
	if (!index) 
		index = 0;
	
	if (!resources[index])
		return;

	var fileref=document.createElement('script');
	fileref.setAttribute("type","text/javascript");
	fileref.setAttribute("src", resources[index].url);

	var done = false;

	fileref.onload = fileref.onreadystatechange = function(){
		if ( !done && (!this.readyState ||
				this.readyState == "loaded" || this.readyState == "complete") ) {
			done = true;
			if (resources[index].callback)
				resources[index].callback();
			viper_load_js_stack(resources,index+1);

			// Handle memory leak in IE
			//fileref.onload = fileref.onreadystatechange = null;
			//head.removeChild( fileref );
		}
	};
	
	if (typeof fileref!="undefined")
		document.getElementsByTagName("head")[0].appendChild(fileref);
}

function viper_load_css_stack(resources)
{
	var index=0;

	for(index=0; index < resources.length; index++)
	{
		var fileref=document.createElement("link");
		fileref.setAttribute("rel", "stylesheet");
		fileref.setAttribute("type", "text/css");
		fileref.setAttribute("href", resources[index].url);
		
		if (typeof fileref!="undefined")
			document.getElementsByTagName("head")[0].appendChild(fileref);
	}
}



// environment variables
viper_env = 'prod';
viper_apiUrl = 'http://vanityvid.com';
viper_baseUrl = 'http://vanityvid.com';
viper_resourcesCdn = 'http://static.vanityvid.com';
viper_facebookApiKey = 'd6b4b1f804aa2bd414988915b13ee1ca';
viper_xdReceiverPath = 'http://vanityvid.com/xd_receiver.htm';
viper_swfFile = viper_resourcesCdn + "/swf/viper-63.56.swf";
viper_addonUrls = {};
viper_addonUrls.firefox = 'https://addons.mozilla.org/en-US/firefox/addon/162157/';
viper_addonUrls.chrome = 'https://chrome.google.com/extensions/detail/mejpdkgfbjomoecljifahpiakdjajflj';
viper_addonUrls.explorer = 'http://addon.vanityvid.com/ie/vanityvid-1.0.15.0.msi';
viper_addonBrowser = '';
viper_addonUrl = '';

// load resource stack
var viper_js_resources = [
	{
		url: viper_resourcesCdn + "/js/vanityvid.lib-63.56.js",
		callback: function(){viper_start()}
	}
];
var viper_css_resources = [
	{
		url: viper_resourcesCdn + "/css/overlay-63.56.css"
	}
];

viper_load_js_stack(viper_js_resources);
viper_load_css_stack(viper_css_resources);