diff --git a/tabeleditor.inc.php b/tabeleditor.inc.php
index eebc831..5aecccc 100644
--- a/tabeleditor.inc.php
+++ b/tabeleditor.inc.php
@@ -101,7 +101,7 @@
     var entry_name = "__buttons_"+cellid;
     var entry = document.getElementById(entry_name);
 
-    elm.style = backuped_style;
+    elm.style.cssText = backuped_style;
     if (elm.initial_value != value) {
         elm.style.color= "red";
         document.getElementById("__buttons").style.visibility = "visible";
@@ -172,7 +172,7 @@
     var container = document.querySelector('.style_td');
     var style = window.getComputedStyle(container);
 
-    backuped_style = elm.style;
+    backuped_style = elm.style.cssText;
 
     elm.value = value;
     elm.style.width = (e.target.clientWidth-5) + "px";