随便写了下
<span id="hit" style="position:absolute; width:200px;"></span>
<center><input type="text" size="5" value="这是在元素下方" onFocus="show(this)" onBlur="hide(this)"></center>
<script language="javascript">
function show(obj) {
document.getElementById("hit").innerText = obj.value;
document.getElementById("hit").style.top = obj.offsetTop + obj.offsetHeight;
document.getElementById("hit").style.left = obj.offsetLeft;
document.getElementById("hit").style.display = "";
}function hide(obj) {
document.getElementById("hit").style.display = "none";
}
</script>
<span id="hit" style="position:absolute; width:200px;"></span>
<center><input type="text" size="5" value="这是在元素下方" onFocus="show(this)" onBlur="hide(this)"></center>
<script language="javascript">
function show(obj) {
document.getElementById("hit").innerText = obj.value;
document.getElementById("hit").style.top = obj.offsetTop + obj.offsetHeight;
document.getElementById("hit").style.left = obj.offsetLeft;
document.getElementById("hit").style.display = "";
}function hide(obj) {
document.getElementById("hit").style.display = "none";
}
</script>
可以先检测分辨率~然后用if..(分辨率) . then 列出各分辨率情况下层的位置