steroids.on('ready', function()
{
	var basePath = steroids.app.absoluteUserFilesPath;
	function cacheImage(obj,type)
	{
		if ($(obj).hasClass('cacheImage_cached'))
			return false;
		if (type=='src')
		{
			var url = $(obj).attr('src').split('?')[0].split('#')[0].replace(/^[^a-z\d]*|[^a-z\d]*$/gi,'');
		}
		else if (type=='background')
		{
			var css = $(obj).css('background-image');
			var url = css.replace('url(','').replace(')','').split('?')[0].split('#')[0].replace(/^[^a-z\d]*|[^a-z\d]*$/gi,'');
		}
		var filename = url.split('/')[url.split('/').length-1];
		var ext = filename.split('.')[filename.split('.').length-1];
		if (localStorage['cacheImage:'+url] && $(obj).attr('src') && $(obj).attr('src').substr(0,13)!='/cacheImages/')
		{
			if (type=='src')
				$(obj).attr('src',localStorage['cacheImage:'+url]);
			else if (type=='background')
				$(obj).css({'background-image':'url('+localStorage['cacheImage:'+url]+')'});
			/***///$('body').append('<div style="margin:10px;padding:10px;background:white;border:5px solid green;">cacheImages: setting local image type '+type+': '+localStorage['cacheImage:'+url]+'</div>');
		}
		if (!	['cacheImage:'+url] && !$(obj).hasClass('cacheImage_cached') && (url.substring(0,4)=='http' || url.substring(0,4)=='locahost') && (ext.toLowerCase()=='jpg' || ext.toLowerCase()=='jpeg' || ext.toLowerCase()=='png'))
		{
			var fileTransfer = new FileTransfer();
			var uri = encodeURI(url);
			fileTransfer.download(
				uri,
				basePath+'/cacheImages/'+filename,
				function(entry)
				{
					/**/console.log('cacheImages: download complete: '+entry.name);
					/***///$('body').append('<div style="margin:10px;padding:10px;background:white;border:5px solid orange;">cacheImages: download complete: '+entry.name+'</div>');
					sessionStorage['cacheImage:'+url] = 'stored';
					localStorage['cacheImage:'+url] = '/cacheImages/'+entry.name;
				},
				function(error)
				{
					/**/console.log('cacheImages: download error source ' + error.source + '; download error target ' + error.target + '; upload error code' + error.code);
					/***///$('body').append('<div style="margin:10px;padding:10px;background:white;border:5px solid orange;">cacheImages: download error source ' + error.source + '; download error target ' + error.target + '; upload error code' + error.code+'</div>');
				},
				false
			);
			$(obj).addClass('cacheImage_cached');
		}
	}
	function cacheImages()
	{
		$('img').each(function()
		{
			if (!$(this).hasClass('cacheImage_cached') && $(this).attr('src'))
				cacheImage(this,'src');
		});
		$('*').each(function()
		{
			if (!$(this).hasClass('cacheImage_cached') && $(this).css('background-image')!='none')
				cacheImage(this,'background');
		});
	}
	setInterval(cacheImages,1000);
});