function getHTTPObject(){
　var xmlhttp = false;
　if(window.XMLHttpRequest){
　　xmlhttp = new XMLHttpRequest();
　　if(xmlhttp.overrideMimeType){
　　　xmlhttp.overrideMimeType('text/xml');
　　}
　}
　else{
　　try{
　　　xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
　　}catch(e){
　　　try{
　　　　xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
　　　}catch(E){
　　　　xmlhttp = false;
　　　}
　　}
　}
　return xmlhttp;
}

function checkall(form){
	if(form.username.value=="" || form.pass.value=="" || form.email.value=="" || form.birthdy_year.value=="" || form.birthdy_month.value=="" || form.birthdy_day.value==""){
		return false;
		}
	}
	function isEmail(str){
       var reg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/;
       return reg.test(str);
}
	function isNumber(String)
{ 
var Letters = "1234567890-"; //可以自己增加可输入值
var i;
var c;
if(String.charAt( 0 )=='-')
return false;
if( String.charAt( String.length - 1 ) == '-' )
return false;
for( i = 0; i < String.length; i ++ )
{ 
c = String.charAt( i );
if (Letters.indexOf( c ) < 0)
return false;
}
return true;
}

function chkemail(form){
	if(form.email.value==""){
		email1.innerHTML="请输入邮箱地址!";
		}
		else{
		if(!isEmail(form.email.value)){
			email1.innerHTML="请正确输入邮箱!";
			form.email.value='';
			form.email.focus();
			return false;
			}else{
			var xmlhttp = getHTTPObject();
			var user_email=form.email.value;
			var url="chkemail.php?em="+user_email;
			xmlhttp.open("GET",url,true);
			xmlhttp.onreadystatechange = function(){
			if(xmlhttp.readyState == 4){
			if(xmlhttp.status == 200){
				if(xmlhttp.responseText==2){
			email1.innerHTML="此邮箱已被注册,请重新填写!";
			form.email.value='';
			form.email.focus();
			return false;
				}else if(xmlhttp.responseText==1){
					email1.innerHTML="恭喜您,此邮箱可以注册!";
					}
			}
			}
			}
			xmlhttp.send(null);
			}
			}
	}
	
	function chkname(form){
	if(form.username.value==""){
		username1.innerHTML="请输入您的用户名!";
		}
		else{
		var xmlhttp = getHTTPObject();
			var user_name=form.username.value;
			var url="chkemail.php?name="+encodeURIComponent(user_name);
			xmlhttp.open("GET",url,true);
			xmlhttp.onreadystatechange = function(){
			if(xmlhttp.readyState == 4){
			if(xmlhttp.status == 200){
				if(xmlhttp.responseText==2){
			username1.innerHTML="此用户名已被使用,请重新填写!";
			form.username.value='';
			form.username.focus();
			return false;
				}else if(xmlhttp.responseText==1){
					username1.innerHTML="恭喜您,此用户名可以使用!";
					}
			}
			}
			}
			xmlhttp.send(null);
			}
	}
		function chkpass(form){
	if(form.pass.value==""){
		pass1.innerHTML="请输入密码!";
		}
		else{
			if(form.pass.value.length<6 || form.pass.value.length>20){
			pass1.innerHTML="密码长度只能在6-20位数字或字母之间!";
			form.pass.value='';
			form.pass.focus();
			}else if(!form.pass.value.match(/^[A-Za-z0-9_]{1,}$/)){
			pass1.innerHTML="密码只能是英文、数字下划线或组合!";
			form.pass.value='';
			form.pass.focus();	
			}else{
			pass1.innerHTML="填写正确!";
			}
			}
	}
	function chkbirthdy(form){
	if(form.birthdy_year.value=="" || form.birthdy_month.value=="" || form.birthdy_day.value==""){
		birthdy.innerHTML="请选择出生日期";
		//form.birthdy_year.focus();
		}else{
			birthdy.innerHTML="选择正确!";
			}
	}
	function chkpass1(form){
	if(form.pass1.value==""){
		pass11.innerHTML="<span class=fs>请确认密码!</span>";
		}
		else{
		if(form.pass1.value!=form.pass.value){
		pass11.innerHTML="<span class=fs>两次密码输入不一致!</span>";
		form.pass1.value='';
		}else{
			pass11.innerHTML="<span class=fs>填写正确!</span>";
			}
			}
	}
	function chkque(form){
	if(form.question.value==""){
		que1.innerHTML="<span class=hongse>请输入密码提示!</span>";
		}
		else{
			que1.innerHTML="<span class=hongse>填写正确!</span>";
			}
	}
		function chkan(form){
	if(form.answer.value==""){
		ans1.innerHTML="<span class=hongse>请输入问题答案!</span>";
		}
		else{
			ans1.innerHTML="<span class=hongse>填写正确!</span>";
			}
	}

	function chkpro_name(form){
	if(form.pro_name.value==""){
		pro_name1.innerHTML="<span class=hongse>请正确输入产品名称!</span>";
		}
		else{
			pro_name1.innerHTML="<span class=hongse>填写正确!</span>";
			}
	}
	
	function chkpho(form){
	if(form.phone.value==""){
		pho1.innerHTML="<span class=hongse>请输入联系电话!</span>";
		}
		else{
		if(!isNumber(form.phone.value)){
			pho1.innerHTML="<span class=hongse>联系电话只能由数字和-组成!</span>";
			form.phone.value='';
			return false;
			}else{
			pho1.innerHTML="<span class=hongse>填写正确!</span>";
			}
			}
	}
		function chkpro_gg(form){
	if(form.pro_gg.value==""){
		gg1.innerHTML="<span class=hongse>请填写规格!</span>";
		}
		else{
			gg1.innerHTML="<span class=hongse>填写正确!</span>";
			}
	}
	function chkpro_fk(form){
	if(form.fkfs.value==""){
		fk1.innerHTML="<span class=hongse>请填写付款方式!</span>";
		}
		else{
			fk1.innerHTML="<span class=hongse>填写正确!</span>";
			}
	}
	function chkpro_jh(form){
	if(form.jh_time.value==""){
		jh1.innerHTML="<span class=hongse>请输入交货期限!</span>";
		}
		else{
		/*if(!isNumber(form.my_ys.value)){
			ys1.innerHTML="<span class=fs>月薪只能输入数字!</span>";
			form.my_ys.value='';
			return false;
			}else{*/
			jh1.innerHTML="<span class=hongse>填写正确!</span>";
			//}
			}
	}

	function chkyz(form){
	if(form.yz.value==""){
		yz1.innerHTML="<span class=fs>请输入验证码!</span>";
		}
		else{
	        var xmlhttp = getHTTPObject();
			var num=form.yz.value;
			var url="yz_page.php?num="+num;
			xmlhttp.open("GET",url,true);
			xmlhttp.onreadystatechange = function(){
			if(xmlhttp.readyState == 4){
			var msg=xmlhttp.responseText;
			if(msg == '2'){
			yz1.innerHTML="<span class=fs>填写正确</span>";
			return false;
			}else if(msg == '1'){
			yz1.innerHTML="<span class=fs>验证码错误!</span>";
			form.yz.value='';
			return false;
			}
			else{
			yz1.innerHTML="<span class=fs>未知错误!</span>";
			}
			}
			}
			xmlhttp.send(null);
			}
	}
	
			function chkcontent(form){
	if(form.content.value==""){
		content1.innerHTML="<span class=fs>请填写内心独白!</span>";
		}
	}
	

function CheckAll(form,flag)
{
  for (var i=0;i<form.elements.length;i++)
    {
    var e = form.elements[i];
    if (e.name.substring(0,6) == 'delete')
       e.checked = flag;
    }
}