function Chk(){
		var username = document.getElementById("username");
		//var isemail = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;	
		var isemail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

		var userpwd =  document.getElementById("pwd");

		if(username.value==''){
			alert('请输入用户名！');
			username.focus();
			return false;
		}else if(!isemail.test(username.value)){
                alert('请输入有效的E_mail！');
                username.focus();                
				return false;
        }else if(userpwd.value==''){
        	alert('请输入密码！');
                userpwd.focus();                
				return false;
        }
        return true;
	}
	function blru_check(){
		var email = document.getElementById("email");
		var isemail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		var mobile = document.getElementById("mobile");

		if(email.value==''){
			alert('请输入E_mail！');

			return false;
		}else if(!isemail.test(email.value)){
                alert('请输入有效的E_mail！');
             
				return false;
        }else {
			talktoServer('dis_em',"check_ajax.php?mark=mobile&mobile="+email.value,'');
		}
	}

	function check_ind_email(){
		var email = document.getElementById("email");
		var isemail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if(email.value==''){
			return false;
		}else if(!isemail.test(email.value)){

			return false;
		}else{
			talktoServer('dis_email',"check_ajax.php?mark=email&email="+email.value,'');
		}

	}

	function get_yz(){
		var yz_num = document.getElementById("yzcode").value;
		talktoServer('yz_num',"check_ajax.php?mark=yzcode&code="+yz_num,'');

	}
	function check_ind_tell(){
		var mobile = document.getElementById("mobile");
		var istell = /^[\d]{11,12}$/;
		if(mobile.value==''){

			return false;
		}else if(!istell.test(mobile.value)){

			return false;
		}else{
			talktoServer('dis_tell',"check_ajax.php?mark=mobile&mobile="+mobile.value,'');
		}
	}

	function check_null(){
		var email = document.getElementById("email");
		var isemail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		var istell = /^[\d]{11,12}$/;
		var mobile = document.getElementById("mobile");
		var TrueName = document.getElementById("TrueName");
		var dis_email = document.getElementById("dis_email").innerHTML;
		var dis_tell = document.getElementById("dis_tell").innerHTML;
		var re = /^[\u4e00-\u9fa5]{2,4}$/;
		
		if(!re.test(TrueName.value)){
        	alert('Hi，为了尽快为您服务，请您提供中文姓名！');
			TrueName.focus();
            return false;
        }else if(mobile.value==''){
        	alert('请您放心，您的信息受到绝对的保护，请提供最常使用的电话，顾问将尽快与您联系！');
                mobile.focus();                
				return false;
        }else if(!istell.test(mobile.value)){
                alert('请输入有效的手机号码！');          
				return false;
        }else if(dis_tell=='1'){
				alert('电话已经存在！');
                mobile.focus();                
				return false;

		}else if(email.value==''){
			alert('请输入您最常用的邮箱，您的信息受到绝对的保护！');
			return false;
		}else if(!isemail.test(email.value)){
                alert('请输入有效的E_mail！');          
				return false;
        }else if(dis_email=='1'){
				alert('邮箱已经存在！');
                email.focus();                
				return false;

		}
        return true;
	}