article=document.getElementById('article').innerHTML;
if(article.indexOf(strAdBegin)!=-1){
str +=article.substr(0,article.indexOf(strAdBegin));
strTmp=article.substr(article.indexOf(strAdEnd)+strAdEnd.length, article.length);
}else{
article=document.getElementById('article').innerHTML;
if(article.indexOf(strAdBegin)!=-1){
str +=article.substr(0,article.indexOf(strAdBegin));
strTmp=article.substr(article.indexOf(strAdEnd)+strAdEnd.length, article.length);
}else{
