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使用提示

可以拖动的图片

演示效果：请用鼠标拖动图片

代码提示：按下面的说明和注释复制代码

一：修改<body***>中的内容，将下面的代码加入原<body***>中
  onload="init()"

二：将下面的代码复制到〈BODY〉与〈/BODY〉中
<SCRIPT language=JavaScript>
drag = 0
move = 0
function init() {
    window.document.onmousemove = mouseMove
    window.document.onmousedown = mouseDown
    window.document.onmouseup = mouseUp
    window.document.ondragstart = mouseStop
}
function mouseDown() {
    if (drag) {
        clickleft = window.event.x - parseInt(dragObj.style.left)
        clicktop = window.event.y - parseInt(dragObj.style.top)
        dragObj.style.zIndex += 1
        move = 1
    }
}
function mouseStop() {
    window.event.returnValue = false
}
function mouseMove() {
    if (move) {
        dragObj.style.left = window.event.x - clickleft
        dragObj.style.top = window.event.y - clicktop
    }
}
function mouseUp() {
    move = 0
}
</SCRIPT>
<div id="block1" onmouseout="drag=0" onmouseover="dragObj=block1; drag=1;" style="height: 90; left: 200; position: absolute; top: 200; width: 90">
<dd>

<img alt border="0" src="13.gif" width="146" height="100"> </dd> </div>

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