function checkemail() {

	if (document.comRegForm.loginName.value==''){
            window.alert ("请输入您的Email ！")
            return false

        }
		 if ( !isemail(document.comRegForm.loginName.value) )
           return false

	    var loginId = comRegForm.loginName.value;
	    var open_url = "com/email_exist.jsp?email=" + loginId;

	window.open(open_url,'','status=0,directories=0,resizable=0,toolbar=0,location=0,scrollbars=0,width=120,height=80');
}
function checkcomname() {

	if (document.comRegForm.userName.value==''){
            window.alert ("请输入帐号别名 ！")
            return false

        }
		 if ( !isemail(document.comRegForm.loginName.value) )
           return false

	    var loginId = comRegForm.userName.value;
	    var open_url = "com/comname_exist.jsp?userName=" + loginId;


	window.open(open_url,'','status=0,directories=0,resizable=0,toolbar=0,location=0,scrollbars=0,width=120,height=80');
}


function checkdata() {

if(document.comRegForm.xieyi.checked!=true){
       alert("您必须同意此协议才能完成注册!")
	    return false;
      }



        if (Jtrim(document.comRegForm.loginName.value)=='') {
                window.alert ("请输入您的Email ！")
                return false
        }

        if ( !isemail(document.comRegForm.loginName.value) )
           return false
		if(comRegForm.userName.value==''){
          alert("请输入帐号别名！");
          return false;
        }
        if (Jtrim(document.comRegForm.mgpwd.value)=='') {
                window.alert ("请输入您的密码 ！")
                return false
        }
        if (Jtrim(document.comRegForm.mgpwd.value).length<4) {
                window.alert ("您的密码数必须大于3位 ！")
                return false
        }
		if (document.comRegForm.mgpwd.value!=document.comRegForm.mgpwd2.value) {
                window.alert ("两次输入的密码不一致 ！")
                return false
        }

        
        return true
}
function getpwdmail() {

	if (document.comRegForm.loginName.value==''){
            window.alert ("请输入您的Email ！")
            return false

        }
		if ( !isemail(document.comRegForm.loginName.value) )
           return false
 return true
}