CKEDITOR - prevent adding image dimensions as a css style

Question

How to prevent CKEDITOR from adding image dimensions as a style?

Instead of this:

Answer 1

When you save your form, do this

var CKEDITOR   = window.parent.CKEDITOR;   
        for ( var i in CKEDITOR.instances ){
           var currentInstance = i;
           break;
        }
        var oEditor = CKEDITOR.instances[currentInstance];
        oEditor.dataProcessor.htmlFilter.addRules({
            elements :{
                img : function( element ){
                    if(!element.attributes.width){
                        if(element.attributes.style){
                            var styling = element.attributes.style
                            var findwidth = new RegExp("\[width: \]\s*(((?!\[width: \]|\[px\]).)+)\s*\[px\]")
                            var sWidth = findwidth.exec(styling)
                            sWidth = sWidth[1]
                            if(sWidth) element.attributes.width = sWidth;
                        }
                        // var reg=/width: \s*([0-9]+)\s*px/i;
                        // var res=styling.match(reg);


                    }
                   if(!element.attributes.height){
                        if(element.attributes.style){
                            var styling = element.attributes.style
                            var findheight = new RegExp("\[height: \]\s*(((?!\[height: \]|\[px\]).)+)\s*\[px\]")
                            var sHeight = findheight.exec(styling)
                            sHeight = sHeight[1]
                            if(sHeight) element.attributes.width = sHeight;
                        }
                    }

                }

    }