function ReMoveHtml(obj){
obj.value = obj.value.replace(/<\/?[^>]+>/g,''); //去除HTML tag
obj.value = obj.value.replace(/[ | ]*\n/g,'\n'); //去除行尾空白
obj.value= obj.value.replace(/\n[\s| | ]*\r/g,'\n'); //去除多余空行
}
function ad()
{
   document.write("<a href=\"http://www.hydst.com/zhuanti/zcrds/\" target=\"_blank\"><img src = \"http://www.hydst.com/UpFile/ad/Img/tree.jpg\" style=\"border:none;\" /></a>"); 
}