diff --git a/admin/js/typecho.js b/admin/js/typecho.js
index 0e39045e..298bb1a8 100644
--- a/admin/js/typecho.js
+++ b/admin/js/typecho.js
@@ -1317,3 +1317,26 @@ jQuery.cookie = function (key, value, options) {
 	};
 
 })( jQuery );
+
+jQuery.fn.css2 = jQuery.fn.css;
+jQuery.fn.css = function() {
+    if (arguments.length) return jQuery.fn.css2.apply(this, arguments);
+    var attr = ['font-family','font-size','font-weight','font-style','color', 'box-sizing',
+        'text-transform','text-decoration','letter-spacing', 'box-shadow',
+        'line-height','text-align','vertical-align','direction','background-color',
+        'background-image','background-repeat','background-position',
+        'background-attachment','opacity','width','height','top','right','bottom',
+        'left','margin-top','margin-right','margin-bottom','margin-left',
+        'padding-top','padding-right','padding-bottom','padding-left',
+        'border-top-width','border-right-width','border-bottom-width',
+        'border-left-width','border-top-color','border-right-color',
+        'border-bottom-color','border-left-color','border-top-style',
+        'border-right-style','border-bottom-style','border-left-style','position',
+        'display','visibility','z-index','overflow-x','overflow-y','white-space',
+        'clip','float','clear','cursor','list-style-image','list-style-position',
+        'list-style-type','marker-offset'];
+    var len = attr.length, obj = {};
+    for (var i = 0; i < len; i++) 
+        obj[attr[i]] = jQuery.fn.css2.call(this, attr[i]);
+    return obj;
+};
diff --git a/admin/write-js.php b/admin/write-js.php
index 5588bbd6..5817cbd1 100644
--- a/admin/write-js.php
+++ b/admin/write-js.php
@@ -109,20 +109,32 @@ $(document).ready(function() {
     var slug = $('#slug');
 
     if (slug.length > 0) {
-        var sw = slug.width();
-        if (slug.val().length > 0) {
-            slug.css('width', 'auto').attr('size', slug.val().length);
+        var justifySlug = $('<div />').css(slug.css()).css({
+            'display'   :   'none',
+            'width'     :   'auto'
+        }).insertAfter(slug), originalWidth = slug.width();
+
+        function justifySlugWidth() {
+            var html = slug.val().replace(/&/g, '&amp;')
+                    .replace(/</g, '&lt;')
+                    .replace(/>/g, '&gt;')
+                    .replace(/'/g, '&#039;')
+                    .replace(/"/g, '&quot;')
+                    .replace(/ /g, '&nbsp;')
+                    .replace(/((&nbsp;)*)&nbsp;/g, '$1 ')
+                    .replace(/\n/g, '<br />')
+                    .replace(/<br \/>[ ]*$/, '<br />-')
+                    .replace(/<br \/> /g, '<br />&nbsp;');
+
+            justifySlug.css('min-width', html.length > 0
+                ? 'inherit' : originalWidth);
+
+            justifySlug.html(html);
+            slug.width(justifySlug.width());
         }
 
-        slug.bind('input propertychange', function () {
-            var t = $(this), l = t.val().length;
-
-            if (l > 0) {
-                t.css('width', 'auto').attr('size', l);
-            } else {
-                t.css('width', sw).removeAttr('size');
-            }
-        }).width();
+        slug.bind('input propertychange', justifySlugWidth);
+        justifySlugWidth();
     }
 
     // 原始的插入图片和文件