让FireFox支持InnerText属性

增加下面的脚本就行：

if(window.navigator.userAgent.toString().toLowerCase().indexOf("firefox")>=0){// in firefoxHTMLElement.prototype.__defineGetter__( "innerText",function(){var intxt = "";var ss = this.textContent.split("\n");for(var i=0; i <ss.length; i++){//处理空白字符intxt += ss[i].replace(/(^\s*)|(\s*$)/g, "");}return intxt;});HTMLElement.prototype.__defineSetter__( "innerText",function(sText){this.textContent=sText;});}