sj='站内搜索：'
sj=sj+'<select name="condition">'
sj=sj+'<option value="title">按标题搜索</option>'
sj=sj+  '<option value="content">按内容搜索</option>'
sj=sj+  '<option value="author">按作者搜索</option>'
sj=sj+  '<option value="source">按出处搜索</option>'
sj=sj+'</select>'
sj=sj+'&nbsp'
sj=sj+  '<input type="text" name="keyword" size="20">'

sj=sj+'&nbsp'
sj=sj+  '<input type="submit" name="Submit" size=""value="搜 索">'
document.write(sj)