autoload.html

<html>

<head>
    
    <style type="text/css">
    
    h1{
        font-family: sans-serif;
        color: blueviolet;
        font-size: 25px;
        //margin: 30px;
        width: 500px;
        height: 100px;
        margin: auto;
        margin-top: 50px;
    }
        
        .popup{
            
         width: 400px;
        height: 300px;
        text-align: center;
        padding: 30px;
        background-color: rgba(0, 0, 0, .5);
        font-family: "Trebuchet MS",Arial,sans-serif;
            color: white;
            visibility: hidden;
            position: absolute;
            top: 100px;
            left: 40%;
        }
    </style>
    
    
    </head>
<body onload="downlord()">
    
    
    <h1>Disaster Managenment Demo Page</h1>
    <div class="popup" id="popup">
    Hey Welcome to our site .We had made Accessing us more easy.<br>
        Downlord our Android App. And get All services in your phone.
        
        <a href="downlord/d_andaman.apk">Downlord</a><br><br>
        
        <button onclick="close()">close</button>
    
    </div>
    
    </body>
    
    <script type="text/javascript">
    var downlord=function(){
        
        var pop=document.getElementById("popup");
        pop.style.visibility="visible";
    
    };
        var close=function(){
             var pop=document.getElementById("popup");
                pop.style.visibility="hidden";
            
        };
    
    
    </script>


</html>