get innerText with linebreaks in Firefox. compatible syntaxhighlighter

getInnerText.js

//
// useful for executing safely embedded syntaxhighlighter code
//

function getInnerText(el, recurse) {
        // innerText emulation for Firefox
        // pereserve carriage returns
        // remove JS comments
         var inner = new Array();
         if (el.childNodes[0] && el.childNodes[0].nodeValue) {
            var value = el.childNodes[0].nodeValue; 
            // remove comments
            var re = /\s*\/\/.*\n/gm;
            value = value.replace(re,'');
            // check non empty
            if (value.replace(/\s/g,'')!='') {
                inner.push(value);
                }
            }
         for (var i=0;i<el.childNodes.length;i++) {
            inner = inner.concat(getInnerText( el.childNodes[i], true ) );
         }
        
        if (recurse) {
            return inner;
            }
        else {
            return inner.join('\n');
        }
}