<html><head><title>层与按钮对齐</title></head><body>
<div align=left><table border=1 width=600 height=50>
<tr align=center>
<td>
<input type=button value=ok onmouseover="cc(this)"
onmouseout="document.all.pop.style.display='none'">
</td><td>
<input type=button value=ok onmouseover="cc(this)"
onmouseout="document.all.pop.style.display='none'">
</td><td>
<input type=button value=ok onmouseover="cc(this)"
onmouseout="document.all.pop.style.display='none'">
</td></tr>
</table><div>
<div id=pop style="position:absolute;width:100;height:50;z-index:99;display:none">
<table border=0 bgcolor=#FF0000><tr><td>图层文字</td></tr></table></div>
<script language=javascript>
function cc(tt)
{
var daps = document.all.pop.style;
var ttop = tt.offsetTop; //TT控件的定位点高
var thei = tt.clientHeight; //TT控件本身的高
var tleft = tt.offsetLeft; //TT控件的定位点宽
var ttyp = tt.type; //TT控件的类型
while (tt = tt.offsetParent){ttop+=tt.offsetTop; tleft+=tt.offsetLeft;}
daps.top = (ttyp=="image")? ttop+thei : ttop+thei+6; //层的 Y 坐标
daps.left = tleft + 1; //层的 X 坐标
daps.display = ""; //层显示
}
</script>
</body></html>
