diff --git a/WINGs_tutorial/WINGstep1.html b/WINGs_tutorial/WINGstep1.html
index 61c35bb..b07f291 100644
--- a/WINGs_tutorial/WINGstep1.html
+++ b/WINGs_tutorial/WINGstep1.html
@@ -9,7 +9,7 @@
 </head>
 
 <body>
-<table align="JUSTIFY" width="100%"><tbody><tr><td align="LEFT"><a href="WINGsIntro.html">LAST: Introduction</a></td>  <td align="CENTER"><a href="WINGtoc.html">Contents</a></td><td align="RIGHT"><a href="WINGStep2.html">NEXT: Step 2 Processing Events</a></td></tr></tbody></table>
+<table align="JUSTIFY" width="100%"><tbody><tr><td align="LEFT"><a href="WINGsIntro.html">LAST: Introduction</a></td>  <td align="CENTER"><a href="WINGtoc.html">Contents</a></td><td align="RIGHT"><a href="WINGstep2.html">NEXT: Step 2 Processing Events</a></td></tr></tbody></table>
 
 <h4>Step 1: Six lines show a window on the screen</h4>
 <p>
@@ -61,4 +61,4 @@ The resulting colour is a RGB combination..
 </p><table align="JUSTIFY" width="100%"><tbody><tr><td align="LEFT"><a href="WINGsIntro.html">LAST: Introduction</a></td>  <td align="CENTER"><a href="WINGtoc.html">Contents</a></td><td align="RIGHT"><a href="WINGStep2.html">NEXT: Step 2 Processing Events</a></td></tr></tbody></table>
 
 
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+</body><style type="text/css">embed[type*="application/x-shockwave-flash"],embed[src*=".swf"],object[type*="application/x-shockwave-flash"],object[codetype*="application/x-shockwave-flash"],object[src*=".swf"],object[codebase*="swflash.cab"],object[classid*="D27CDB6E-AE6D-11cf-96B8-444553540000"],object[classid*="d27cdb6e-ae6d-11cf-96b8-444553540000"],object[classid*="D27CDB6E-AE6D-11cf-96B8-444553540000"]{	display: none !important;}</style></html>
