验证求精简.js

<script type="text/javascript" src="{:THEME_PUBLIC_URL}/js/jquery.js"></script>
<form action="{:U('news/Index/doJoin')}" method="post" name="join">
	<input type="text" name="username" id="username" ><span class="username"></span>
	<input type="email" name="email" id="email"><span class="email"></span>
	<input type="text" name="company" id="company"><span class="company"></span>
	<input type="text" name="job" id="job"><span class="job"></span>
	<input type="text" name="tel" id="tel"><span class="tel"></span>
	<input type="text" name="qq" id="qq"><span class="qq"></span>
	<input type="text" name="weixin" id="weixin">
	<input type="text" name="verify" id="verify"><img src="__ROOT__/public/captcha.php" id="verifyimg" alt="{:L('PUBLIC_CHANGE_ONE')}"  style="vertical-align:middle;padding:0 5px 0 0" onclick="changeverify()"/></div>
	<div class="form-row">
		<a href="javascript:void(0)" onclick="totalCheck();" class="btn-green-big" style="margin:20px 0 0"><span>报名</span></a>
        <input type="submit" style='display:none'>
    </div>
</form>
<script type="text/javascript">
function changeverify(){
	var date = new Date();
    var ttime = date.getTime();
    var url = "__ROOT__/public/captcha.php";
    $('#verifyimg').attr('src',url+'?'+ttime);
};
function emailCheck (email){
	$.post("<php>echo U('news/Index/emailCheck')</php>",{email:email},function(data){
		if(!parseInt(data)){
			$(".email").html('<div class="ok"></div>');
		}else{
			$(".email").html('<div class="error">邮箱被占用</div>');
		}
	});	
}
function totalCheck(){
	if($('#username').val().length == 0) {
		$(".username").html('<div class="error">请输入姓名</div>');
		return false;
    }
	if($('#company').val().length == 0) {
		$(".company").html('<div class="error">公司信息不能为空</div>');
		return false;
    }
	if($('#job').val().length == 0) {
		$(".job").html('<div class="error">职位信息为空</div>');
		return false;
    }
	if($("#email").val().length == 0){
		$(".email").html('<div class="error">邮箱不能为空</div>');
		return false;
	}
	if(!$("#email").val().match(/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/)){
		$(".email").html('<div class="error">邮箱格式不正确</div>');
		return false;
	}else{
		emailCheck($("#email").val());
	}
	if ($('#tel').val().length == 0) {
		$(".tel").html('<div class="error">电话不能为空</div>');
		return false;
	}else{
		if(!$('#tel').val().match(/^1\d{10}$/)) {
			$(".tel").html('<div class="error">请输入电话号码</div>');
			return false;
        }
	}
	document.join.submit();
}
$(function() {
	$('#username').blur(function(){
		if($('#username').val().length == 0) {
			$(".username").html('<div class="error">请输入姓名</div>');
        }else{
        	$(".username").html('<div class="ok"></div>');
        }
	})
	$('#company').blur(function(){
		if($('#company').val().length == 0) {
			$(".company").html('<div class="error">公司信息不能为空</div>');
        }else{
        	$(".company").html('<div class="ok"></div>');
        }
	})
	$('#job').blur(function(){
		if($('#job').val().length == 0) {
			$(".job").html('<div class="error">职位信息为空</div>');
        }else{
        	$(".job").html('<div class="ok"></div>');
        }
	})
	$("#email").blur(function(){
		if($("#email").val().length == 0){
			$(".email").html('<div class="error">邮箱不能为空</div>');
		}
		if(!$("#email").val().match(/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/)){
			$(".email").html('<div class="error">邮箱格式不正确</div>');
		}else{
			emailCheck($("#email").val());
		}

	})
	$('#tel').blur(function(){
		if ($('#tel').val().length == 0) {
			$(".tel").html('<div class="error">电话不能为空</div>');
		}else{
			if(!$('#tel').val().match(/^1\d{10}$/)) {
				$(".tel").html('<div class="error">请输入电话号码</div>');
	        }else{
	        	$(".tel").html('<div class="ok"></div>');
	        }
		}
	})
	$('#qq').blur(function(){
		if(!$('#qq').val().match(/^\d{5,12}$/)) {
			$(".qq").html('<div class="error">请输入有效的QQ号</div>');
        }else{
        	$(".qq").html('<div class="ok"></div>');
        }
	})
    $(this).bind('keydown', function(e) {
        var key = e.which;
        if(key == 13) {
            totalCheck();
        }
    });
});
</script>

每个验证都写了两次，没有办法精简呢？