代码如下：
<STYLE TYPE="text/css"> <!-- #moveobj {position: relative; top: 0; left: 0; z-index: -10} --> </STYLE> <script language="javascript"> <!-- //定义函数moveit; function moveit(){ moveTop = document.forms[0].elements[0].value; moveLeft = document.forms[0].elements[1].value; moveobj.style.top = moveTop; moveobj.style.left = moveLeft; } //--> </script> <!--注意：设置一个唯一的ID=moueobj，该ID与CSS中的一致。form属性中action="javascript:moveit()"--> <div id="moveobj"><img src="images\4.gif"></div><p> <form action="javascript:moveit()"> top: <input type=text size=5 name=topnum value=0>    left: <input type=text size=5 name=leftnum value=0> <input type=submit value="移动" name="submit"> </form>