"Review" is to implement a popup login box and verify the input values

Code:

<! DOCTYPE html>#main {width:300px;            height:180px; Background-color: #bebdbd;            Position:absolute; Left:60g; Top:30%;            Display:none;        Border:thick solid black;        }. a span{color:white;        } div input{width:260px; }. A a{list-Style:none;        Color:green; }    </style> <script>functiondisplaydate () {document.getElementById ("Main"). Style.display= "Block"; }        functionhid1 () {document.getElementById ("Name1"). Value= ""; }        functionHid2 () {document.getElementById ("Name2"). Value= ""; }        functionCheckName () {varName = document.getElementById (' name1 '). Value; if(name<=0) {alert (' Email cannot be empty '); }            Else{                varStremail = document.getElementById (' name1 ')); varEmailreg =/^[\w-]+ (\.[ \w-]+) *@[\w-]+ (\.[ \w-]+) +$/; if( !emailreg.test (Stremail.value)) {Alert (' Email input is wrong, please re-enter ')                    return false; }            }                    }                functionCheckpass () {varpass = document.getElementById (' name2 '). Value; varRe3 =/\w{8,}/; if(pass<=0) {alert ("Password cannot be empty"); }            Else if( !Re3.test (pass)) {Alert (' Password number is less than eight bit, please re-enter! ‘); }        }                functioncancle () {document.getElementById (' main '). style.display= "None"; }            </script>
"Review" is to implement a popup login box and verify the input values