code: function updateImageSizeCSS(editor) {
  		var offset = editor.getCaretPos();
  		
  		// find tag from current caret position
  		var info = require('editorUtils').outputInfo(editor);
  		var cssRule = require('cssEditTree').parseFromPosition(info.content, offset, true);
  		if (cssRule) {
  			// check if there is property with image under caret
  			var prop = cssRule.itemFromPosition(offset, true), m;
  			if (prop && (m = /url\((["']?)(.+?)\1\)/i.exec(prop.value() || ''))) {
  				getImageSizeForSource(editor, m[2], function(size) {
  					if (size) {
  						var compoundData = cssRule.range(true);
  						cssRule.value('width', size.width + 'px');
  						cssRule.value('height', size.height + 'px', cssRule.indexOf('width') + 1);
  						
  						require('actionUtils').compoundUpdate(editor, _.extend(compoundData, {
  							data: cssRule.toString(),
  							caret: offset
  						}));
  					}
  				});
  			}
  		}
  	}
docs: Updates image size of CSS property
  @param {IEmmetEditor} editor