function getRootPath(){
    var strFullPath=window.document.location.href;
    var strPath=window.document.location.pathname;
    var pos=strFullPath.indexOf(strPath);
    var prePath=strFullPath.substring(0,pos);
    var postPath=strPath.substring(0,strPath.substr(1).indexOf('/')+1);
    return(prePath+postPath);
   }
function RndNum(n){
	var rand="";
	for(var i=0;i<n;i++)
	rand += Math.floor(Math.random()*10);
	return rand;
}
function changCode(url, width, height){
	 var rand = new Date().getTime();
	 var str  = url+'data/include/imagecode.php?act=verifycode&width='+width+'&height='+height+'&random=' + rand + RndNum(4);
	 $("#checkCodeImg").attr("src",str);
}

$(".msgbtn").click(function(){
	var name      = $(this).parents("form").find("#name");
    var contact   = $(this).parents("form").find("#contact");
    var content   = $(this).parents("form").find("#content");
    var checkcode = $(this).parents("form").find("#checkcode");
	switch (true){
		case name.val() == '':
			alert("姓名不能�I�！");
			name.focus();
			return false;
			break;
		case contact.val() == '':
			alert("电话不能�I�！");
			contact.focus();
			return false;
			break;
		case content.val() == '':
			alert("对不��P��您还没有留言呢！");
			content.focus();
			return false;
			break;
		case checkcode.val() == '':
			alert("验证码不能�ؓ�I�！");
			checkcode.focus();
			return false;
			break;
	}
	//电话��L��验证
    
    if(contact.val().length != 11){
        var pattern = new RegExp(/^([0-9]{3,4})?[0-9]{7,8}$/);
        if(!pattern.test(contact.val())){
            alert('误���入有效的电话��L���Q?);
            contact.focus();
            return false;
        }
    }else{
        var pattern = new RegExp(/^1[34578]+\d{9}$/);
        if(!pattern.test(contact.val())){
            alert('手机��L��格式不对');
            contact.focus();
            return false;
        }
    }

    if(checkcode.val().length != 4){
	   alert("验证码格式错�?);
	   return false;
    }

});
//输入框获得焦点的时候，提示内容消失

$(".m_label").click(function(){
	$(this).hide();
	$(this).siblings(".m_input").focus();
});
$(".m_input").focus(function(){
	$(this).siblings(".m_label").hide();
});
$(".m_input").blur(function(){
	if($(this).val() == ''){
		$(this).siblings(".m_label").show();		
	}
});
$(".m_input").each(function(){
	if($(this).val() != ''){
		$(this).siblings(".m_label").hide();
	}
});

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<script>
(function(){
    var bp = document.createElement('script');
    var curProtocol = window.location.protocol.split(':')[0];
    if (curProtocol === 'https') {
        bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
    }
    else {
        bp.src = 'http://push.zhanzhang.baidu.com/push.js';
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