How to find out which element has focus?

[Tohaki]

Is there a quick way to find out which element has focus?

[rangana]

<script type="text/javascript"> 
var elName; 
window.onload=function()
{ 
var el = document.forms[0].elements; 
for(var i=0;i<el.length;i++)
	el[i].onfocus=function()
	{
		elName=this.getAttribute('name');
	} 
} 
</script> 
</head> 
<form>
<a href="#" onclick="alert(elName?'The element having the name of \''+elName+'\' was focused.':'No element was focused.'); return false">"Which element has the focus?"</a><br> 
<input name="mytxt1" type="text"><br> 
<input name="mytxt2" type="text"><br> 
<input name="mytxt3" type="text"><br>
<input name="mytxt4" type="text"><br> 
<input name="mytxt5" type="text"><br> 
</form>

[Tohaki]

Thanks!