function getCookie(name)
{
	var result = null;
	var myCookie = ""+document.cookie+";";
	var searchName = "" + name + "=";
	var startOfCookie = myCookie.indexOf(searchName);
	var endOfCookie;
	if( startOfCookie != -1)
	{
		startOfCookie += searchName.length;
		endOfCookie = myCookie.indexOf(";",startOfCookie);
		result = myCookie.substring(startOfCookie,endOfCookie);
	}
	return result;
}


function checkCode()
{
	var xhvote = document.frmxhvote;
	var msg = '';

	if (xhvote.verifycode.value.length ==0)
	{
		msg += '验证码不能为空\n';
	}else if (xhvote.verifycode.value != getCookie("CheckCode"))
	{
		 msg += '验证码输入有误\n';
	}




	if(msg.length >0)
	{
		alert(msg);
		return false;
	}
}