// nav
document.write('<ul class="nav_list">');
document.write('<li><a href="index.php"><img src="images/home.gif" /></a></li>');
document.write('<li><a href="aboutus.php"><img src="images/about.gif" /></a></li>');
document.write('<li><a href="news.php"><img src="images/news.gif" /></a></li>');
document.write('<li><a href="business.php"><img src="images/introduce.gif" /></a></li>');
document.write('<li><a href="investor.php"><img src="images/investor.gif" /></a></li>');
document.write('<li><a href="contactus_index.htm"><img src="images/contact.gif" /></a></li>');
document.write('</ul>');
document.write('<form  action="search.php" method="post"  name="subform">');
document.write('<dl class="web_search">');
document.write('<dt>站內搜索:</dt>');
document.write('<dd><input type="text" class="search_input" name="keyword"  id="keyword" /></dd>');
document.write('<dd><a href="#" onclick="submitit();" ><img src="images/search_btn.gif" /></a></dd>');
document.write('</form >');
document.write('</dl>');


function  submitit(){
	if(document.getElementById('keyword').value==''){
		alert("不能为空");	
		return false;
	} else {
		document.subform.submit();		
	}	
}