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<div id="thisParent"></div>
<div id="divError" style="position:absolute;border:1px #999 solid;background:#f9f9ff;font-size:12px;color:#00f;padding:4px;display:none"></div>
<script language="javascript">
<!--
var myDiv = document.getElementById("divError");
var thisParent=document.getElementById("thisParent");//动态添加一图片(及其事件)
thisParent.innerHTML += " <img src='images/pic010.png' style='cursor:pointer;width:156px;' onmousemove='showAndMoveMe(\"divError\",\"该项为必填\")' onmouseout='hidAndMoveMe(\"divError\")'/>";
//ib 要移动的对象ID
//message 提示信息
function showAndMoveMe(id,message){//显示&移动DIV层
var obj = document.getElementById(id);
obj.style.display="block"; //显示对象
obj.innerHTML = message;//把信息插入到对象里面
obj.style.pixelTop = event.clientY - 10; //对象坐标
obj.style.pixelLeft = event.clientX + 20;
}
function hidAndMoveMe(id){
var obj = document.getElementById(id);
obj.style.display="none"; //隐藏对象
}
//-->
</script>