diff --git a/js/options.js b/js/options.js
index 37778f0..46c8365 100644
--- a/js/options.js
+++ b/js/options.js
@@ -104,18 +104,21 @@ function setTheme() {
 }
 
 function setShowPreviewOpt(){
+	if(!localStorage['imagesPreview']) localStorage['imagesPreview'] = 'enable';
+	if(!localStorage['imagesPreviewGif']) localStorage['imagesPreviewGif'] = 'true';
+	if(!localStorage['youtubePreview']) localStorage['youtubePreview'] = 'enable';
+	if(!localStorage['vimeoPreview']) localStorage['vimeoPreview'] = 'enable';
+	
 	$('.previewOpt').each(function() {
-		this.value = localStorage[this.id] || 'enable';
+		this.value = localStorage[this.id];
 	})
 
-	$('input[type="checkbox"]').prop('checked', localStorage['imagesPreviewGif'] == 'true')
+	$('.gifCheckBox').prop('checked', localStorage['imagesPreviewGif'] === 'true')
 	
 	if(localStorage['imagesPreview'] == 'disable'){
-		$('input[type="checkbox"]').prop('disabled', true)
+		$('input[type="checkbox"]').prop('disabled', localStorage['imagesPreviewGif'])
 	}
 	
-	if(!localStorage['imagesPreview']) localStorage['imagesPreview'] = "enable";
-	
 	$('.previewOpt').on('change', function(){
 		localStorage[this.id] = $(this).val();
 		if (this.id === 'imagesPreview'){
diff --git a/js/twister_formatpost.js b/js/twister_formatpost.js
index 21a2c96..732cea8 100644
--- a/js/twister_formatpost.js
+++ b/js/twister_formatpost.js
@@ -107,7 +107,7 @@ function postToElem( post, kind ) {
     var ytRegExp = /(?:https?:\/\/)?(?:www\.)?(?:youtu\.be\/|youtube\.com\/(?:embed\/|v\/|watch\?v=|watch\?.+&v=))((\w|-){11})(?:\S+)?/i;
     var vimeoRegExp = /http:\/\/(www\.)?vimeo.com\/(\d+)($|\/)/i;
 
-    if (postLink && localStorage['imagesPreview'] == 'enable' && (/(\.jpg)|(\.gif)|(\.png)|(\.jpeg)|(\.jpe)/i.test(postLink) || /https:\/\/img.bi/gi.test(postLink))){
+    if (postLink && localStorage['imagesPreview'] == 'enable' && (/(\.jpg)|(\.gif)|(\.png)|(\.jpeg)|(\.jpe)/i.test(postLink) || /https:\/\/img.bi/i.test(postLink))){
         previewContainer.show();
         previewContainer.append(imagePreview(postLink));
     }else if(postLink && ytRegExp.test(postLink) && localStorage['youtubePreview'] === 'enable'){
@@ -310,13 +310,13 @@ function escapeHtmlEntities(str) {
 function imagePreview(link) {
     var linkAnon = 'https://ssl-proxy.my-addr.org/myaddrproxy.php/http/';
         
-    if (link && /https:\/\/img.bi/gi.test(link)){
-        return "<img data-imgbi='" + link + "' class='image-preview' />";
-        imgBiJS();
+    if (link && /https:\/\/img.bi/i.test(link)){
+        return '<img data-imgbi="'+link+'" class="image-preview" />';
+        //imgBiJS();
     }else{
         var cleanLink = link.replace(/^http[s]?:\/\//i, '');
         if(/\.gif\b/i.test(cleanLink) && localStorage['imagesPreviewGif'] == 'false') return;
-        return "<img src='"+linkAnon+cleanLink+"' class='image-preview' />";
+        return '<img src="'+linkAnon+cleanLink+'" class="image-preview" />';
     }
 }