var toKnowClick; <input type="submit" name="s1" onclick="javascript:toKnowClick=1;">
<input type="submit" name="s2" onclick="javascript:toKnowClick=2;">
<input type="submit" name="s2" onclick="javascript:toKnowClick=2;">
<input type="submit" name="s1">
<input type="submit" name="s2">
</form>
<script>
function checkSubmit()
{
alert(document.activeElement.name);//code here;
}
</script>
function checkSubmit()
{
var e=document.elementFromPoint(event.clientX,event.clientY);
if(e!=null&&e!=undefined)
{
alert('您点击了'+e.name);
}
}
</script>
<form name="form1" onsubmit="checkSubmit();">
<input type="submit" name="s1">
<input type="submit" name="s2">
</form>