Sedo Js Redactor function

        execToSpan: function(tag, tagPropType, tagProp, cssProp, propFunc, addClass)
        {
            var ed = this, prop;

            $tag = ed.$editor.find(tag).filter(function() {
                if(tagPropType == 'css'){
                    return $(this).css(tagProp).indexOf();
                }else if (tagPropType == 'attr'){
                    return $(this).attr(tagProp);
                }
            });

            $tagChildren = $tag.children('span');
            $tag.first().before('<span id="memTemp1" />');
            $tag.last().after('<span id="memTemp2" />');

            /***
            *   Get final property value
            ***/
            if(tagPropType == 'css'){
                prop = $tag.css(tagProp);
            }else if (tagPropType == 'attr'){
                prop = $tag.attr(tagProp);
            }

            if(typeof(prop) === 'undefined'){
                return false;
            }

            /***
            *   Modify if needed the tagProp value for css
            *   I just needs an object with the value of the tagProp as key
            ***/
            if(propFunc !== false){
                prop = propFunc[prop];
            }

            /***
            *   Replace font=>span OR update existed span
            ***/
            if($tagChildren.length > 0) {

                $tagChildren.each(function()
                {
                    $(this).css(cssProp, prop);
                })
                .unwrap();

                if(typeof(addClass) !== 'undefined')
                {
                    $tagChildren.addClass(addClass);
                }

            }else{

                var cssClass = (typeof(addClass) !== 'undefined') ? 'class="'+addClass+'"' : '';

                $tag.replaceWith(function() {
                    return $('<span '+cssClass+' style="'+cssProp+': ' + prop + ';">' + $(this).html() + '</span>');
                });
            }

            /***
            *   Retrieve selection
            ***/
            first = $("#memTemp1").get(0);
            last = $("#memTemp2").get(0);

            try{
                ed.setSelection(first, 0, last, 0);
            }catch(e){
                console.error(e.message);
            }

                ed.saveSelection();
            $('#memTemp1, #memTemp2').remove();

            /***
            *   Sync rte editor content with textarea
            ***/
            ed.syncCode();
        }