function focusInput(elems)
{
	var count = elems.length;
	var i = 0;
	while(i < count)
	{
		var elem = elems[i];
		var name = elem.tagName;
		if(name == 'INPUT')
		{
			var type = elem.type;
			if(type == 'text' || type == 'password')
			{
				if(elem.value == '')
				{
					elem.focus();
					return elem;
				}
			}
		}
		else if(name == 'TEXTAREA')
		{
			elem.focus();
			return elem;
		}
		++i;
	}
	return null;
}
window.onload = function()
{
	if(document.forms.length > 0)
	{
		focusInput(document.forms[0].elements);
	}
}