<BODY onmousemove="showPos()">
<SCRIPT LANGUAGE="JavaScript">
function showPos(){
pos.innerText = "当前控件的tag:" + event.srcElement.tagName + ",相对于BODY的位置x=" + event.srcElement.offsetLeft+ ",y=" + event.srcElement.offsetTop;}
</SCRIPT>
<div id="pos"></div>
<FORM METHOD=POST ACTION="">
<INPUT TYPE="text" NAME=""><INPUT TYPE="text" NAME="">
<TEXTAREA NAME="" ROWS="6" COLS="30"></TEXTAREA>
<INPUT TYPE="checkbox" NAME="">
<INPUT TYPE="password"><INPUT TYPE="BUTTON" NAME="" value="button1">
</FORM>
</BODY>
<SCRIPT LANGUAGE="JavaScript">
function showPos(){
pos.innerText = "当前控件的tag:" + event.srcElement.tagName + ",相对于BODY的位置x=" + event.srcElement.offsetLeft+ ",y=" + event.srcElement.offsetTop;}
</SCRIPT>
<div id="pos"></div>
<FORM METHOD=POST ACTION="">
<INPUT TYPE="text" NAME=""><INPUT TYPE="text" NAME="">
<TEXTAREA NAME="" ROWS="6" COLS="30"></TEXTAREA>
<INPUT TYPE="checkbox" NAME="">
<INPUT TYPE="password"><INPUT TYPE="BUTTON" NAME="" value="button1">
</FORM>
</BODY>
alert(document.all(i).tagName);
}