function clicknext(dowhat){
	var str1 = find_pwd.str1.value;
	if (validstring1(str1)){
		alert("存在非法字符");
		return;
	}
	if(str1 == null || Trim(str1) == ""){
		alert("请输入会员名！");
		if (dowhat == "dopost"){
			return false;
		}else{
			return;
		}
	}else{
		if (dowhat == "doclick"){
			find_pwd.submit();
		}
	}
}