Index: /FCKeditor/trunk/_whatsnew.html
===================================================================
--- /FCKeditor/trunk/_whatsnew.html	(revision 5122)
+++ /FCKeditor/trunk/_whatsnew.html	(revision 5123)
@@ -48,4 +48,5 @@
 		<li>[<a target="_blank" href="http://dev.fckeditor.net/ticket/4642">#4642</a>] Avoided infinite 
 			loop in IE with invalid HTML.</li>
+		<li>[<a target="_blank" href="http://dev.fckeditor.net/ticket/4487">#4487</a>] The editor was not loading properly in Safari 3.</li>
 		<li>Language file updates for the following languages:
 			<ul>
Index: /FCKeditor/trunk/editor/_source/internals/fckbrowserinfo.js
===================================================================
--- /FCKeditor/trunk/editor/_source/internals/fckbrowserinfo.js	(revision 5122)
+++ /FCKeditor/trunk/editor/_source/internals/fckbrowserinfo.js	(revision 5123)
@@ -59,3 +59,7 @@
 		}
 	}
+
+	if ( browserInfo.IsSafari )
+		browserInfo.IsSafari3 = ( parseFloat( s.match( / applewebkit\/(\d+)/ )[1] ) < 526 ) ;
+
 })(FCKBrowserInfo) ;
Index: /FCKeditor/trunk/editor/fckeditor.html
===================================================================
--- /FCKeditor/trunk/editor/fckeditor.html	(revision 5122)
+++ /FCKeditor/trunk/editor/fckeditor.html	(revision 5123)
@@ -376,5 +376,5 @@
 // Gecko and Webkit browsers don't calculate well the IFRAME size so we must
 // recalculate it every time the window size changes.
-if ( FCKBrowserInfo.IsGecko || FCKBrowserInfo.IsSafari )
+if ( FCKBrowserInfo.IsGecko || ( FCKBrowserInfo.IsSafari && !FCKBrowserInfo.IsSafari3 ) )
 {
 	window.onresize = function( e )