app = navigator.appName;
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    win = ver.indexOf("Win") > 0;
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        ((win) && (app == "Microsoft Internet Explorer") && (vnum >= 4 ))) 

    if (canSupport) {
      window.defaultStatus="";
  

        toc1on = new Image();
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        toc2on = new Image();
    toc2on.src = "y.gif";
        toc3on = new Image();
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        toc4on = new Image();
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        toc5on = new Image();
    toc5on.src = "y.gif";    
        toc6on = new Image();
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        toc8on = new Image();
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        toc9on = new Image();
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        toc10on = new Image();
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        toc2off = new Image();
    toc2off.src = "x.gif";
        toc3off = new Image();
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        toc9off = new Image();
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        toc10off = new Image();
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