chm.css

HTML Help用CSSファイル
コントロールキー＋マウスホイールで拡大・縮小ズームします

BODY,P {font-size=12px!important;}

BODY {
 behavior:expression( (function(el){
   /* Zooming [Ctrl] + [MouseWheel] in chm File*/
   el.document.attachEvent('onmousewheel', function(event){
     if (event.ctrlKey) {
       var _doc=document;
       var zoom = _doc.body.currentStyle.zoom;
       if(zoom == 'normal')zoom=100;
       var changevalue = (event.wheelDelta<0)? 10 : -10;
       var newvalue = parseInt(zoom) + changevalue;
       if (newvalue<10) newvalue = 10;
       var _sheet = (_doc.styleSheets[0])
         ? _doc.styleSheets[_doc.styleSheets.length-1]
         : _doc.createStyleSheet();
       _sheet.addRule('body', 'zoom: ' + newvalue +'%!important;');
       event.returnValue = false; 
       event.cancelBubble = true; 
      }
     }
   );

   el.runtimeStyle.behavior = 'none';
 })(this));
}