Untitled

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <script src="jsscript.js"></script>
</head>
<body>
    <h1>Window Open and Close</h1>
    <form action="">
        <p>
            <input type="button" id="create-window" value="Create New Window">
            <input type="button" id="close-window" value="Close New Window">
        </p>
    </form>
</body>
</html>


addEvent(window,'load',initialize);

    function initialize(){
        if(document.getElementById)
        {
            var oButtonCreate = document.getElementById("create-window");
            var oButtonClose = document.getElementById("close-window");
            if (oButtonCreate && oButtonClose)
            {
                oButtonCreate.onclick = makeNewWindow;
                obuttonClose.onclick =closeNewWindow;
            }
        }
    }

    var newWindow;

    function makeNewWindow()
    {
        newWindow = window.open("","","height=300, width=300")
    }
    function closeNewWindow()
    {
        if(newWindow)
        {
            newWindow.close();
            newWindow =null;
        }
    }

function addEvent(to, type, fn){
    if(document.addEventListener){
        to.addEventListener(type, fn, false);
    } else if(document.attachEvent){
        to.attachEvent('on'+type, fn);
    } else {
        to['on'+type] = fn;
    }
}