对某些字符串进行自动过滤，还是会用到的
<!--要完成此效果把如下代码加入到<head>区域中-->
<script language=javascript >
title_tmp1=document.title
if (title_tmp1.indexOf(">>")!=-1){
title_tmp2=title_tmp1.split(">>");
title_last=" —> "+title_tmp2[1];
title_last=title_last + " —> " + title_tmp2[2];
}else{
if (title_tmp1.indexOf("——")!=-1){
title_tmp2=title_tmp1.split("——");
title_last=" —> "+title_tmp2[1];
if (title_last==" —> "){title_last=" —> "};
if (title_last==" —> "){title_last=" —> "};
}
else { title_last="==>http://www.knowsky.com"}
}
title_new="网页教学网"+title_last+""
step=0
function flash_title()
{
step++
if (step==7) {step=1}
if (step==1) {document.title='◆◇◇◇'+title_new+'◇◇◇◆'}
if (step==2) {document.title='◇◆◇◇'+title_new+'◇◇◆◇'}
if (step==3) {document.title='◇◇◆◇'+title_new+'◇◆◇◇'}
if (step==4) {document.title='◇◇◇◆'+title_new+'◆◇◇◇'}
if (step==5) {document.title='◇◇◆◇'+title_new+'◇◆◇◇'}
if (step==6) {document.title='◇◆◇◇'+title_new+'◇◇◆◇'}
setTimeout("flash_title()",180);
}
flash_title()
</script>