add: return !!val; 
context:             this['xml:lang'] = this['xml:space'] = function(name, htmlnode, xhtmlnode) {                try {                    var val = htmlnode.getAttribute(name);                    if (val) xhtmlnode.setAttribute(name, val);                } catch(e) {                }            };
meta: 2380	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2380/a66c86479bb56fb3ba0bdc9c529feb15bcc74096/kupucontentfilters.js/clean/kupu/common/kupucontentfilters.js