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    <html>
    <head>
    <title>html-网页制作大宝库dabaoku.com</title>
    </head>
    <body>
    <div id="img" style="position:absolute;z-index=99;">
    <img src="http://www.dabaoku.com/images/logo.gif" onClick="pause_resume();" border="0" alt='img'>
    </div>
    <SCRIPT LANGUAGE="JavaScript">
    <!-- Begin
    var xPos = document.body.clientWidth-20;
    var yPos = document.body.clientHeight/2;
    var step = 1;
    var delay = 5;
    var height = 0;
    var Hoffset = 0;
    var Woffset = 0;
    var yon = 0;
    var xon = 0;
    var pause = true;
    var interval;
    img.style.top = yPos;
    function changePos() {
    width = document.body.clientWidth;
    height = document.body.clientHeight;
    Hoffset = img.offsetHeight;
    Woffset = img.offsetWidth;
    img.style.left = xPos + document.body.scrollLeft;
    img.style.top = yPos + document.body.scrollTop;
    if (yon) {
    yPos = yPos + step;
    }else {
    yPos = yPos - step;
    }
    if (yPos < 0) {
    yon = 1;
    yPos = 0;
    }
    if (yPos >= (height - Hoffset)) {
    yon = 0;
    yPos = (height - Hoffset);
    }
    if (xon) {
    xPos = xPos + step;
    }else {
    xPos = xPos - step;
    }
    if (xPos < 0) {
    xon = 1;
    xPos = 0;
    }
    if (xPos >= (width - Woffset)) {
    xon = 0;
    xPos = (width - Woffset);
    }
    }
    function start() {
    img.visibility = "visible";
    interval = setInterval('changePos()', delay);
    }
    function pause_resume() {
    if(pause) {
    clearInterval(interval);
    pause = false;
    }else {
    interval = setInterval('changePos()',delay);
    pause = true;
    }
    }
    start();
    // End -->
    </script>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/costa92/p/3682443.html
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