function isFocussable(ele) {
	var tagName = ele.tagName.toLowerCase();
	var tagType = ele.type ? ele.type.toLowerCase() : '';
	var focussableTag = tagName == 'textarea' || tagName == 'select' || tagType == 'text' || tagType == 'password';
	return focussableTag && tagType != "hidden" && !ele.disabled && !ele.hasAttribute('readonly') && ele.visible();
}

document.observe('dom:loaded', function() {
	try{
		var inputEle = $A($$('form')[0]).find(function(ele){return isFocussable($(ele));});
		inputEle && inputEle.focus();
	}catch (err) {}
});