function GetRenZhengHtml(){
var str,id;
id = GetRandomChars();
str = "<input type='hidden' name='needrenzheng' id='needrenzheng' value='true'><input type='hidden' name='renzid' id='renzid' value="+id+">";
str += "<img onclick='ReIntiRenZheng(this)' src='/renzcode/img.asp?id="+id+"' onmousemove=this.style.cursor='hand'> <font color='#FF0000'>*</font> <font color='#FF6600' style='cursor:pointer;' onclick=alert('请鼠标点击认证码！')>[认证码有问题]</font><a href='http://www.blogcn.com/foot/faq.asp?id=27&hid=364' target='_blank' title='为减少垃圾评论对网站的影响，请大家谅解使用验证码带来的不便.'><font color='#FF6600' style='cursor:hand; '>[为什么使用验证码]</font></a>";
return str;
}

function ReIntiRenZheng(thisImg){
	thisImg.src = "/renzcode/loading.bmp";
	var renzid,id;
	renzid = document.getElementById("renzid");
	id = GetRandomChars();
	renzid.value = id;
	thisImg.src = "/renzcode/img.asp?id="+id;
}

function GetRandomChars(){
	var id = Math.random().toString(16);
	var id1 = Math.random().toString(16);
	//alert(id + "   " + id1);
	return id.substr(2,8)+id1.substr(2,8);
}

document.write ("认证码： <input type=\'text\' name=\'passcode\' size=\'5\'> 	  <script>document.write(GetRenZhengHtml())</script> ")
//把本页URL传到登陆控件
document.loginPage.RedirectUrl.value = location.href;
document.PostTopic2.returnURL.value = location.href;