function drop(root_item, direction) {
	var dd_list = $(root_item).down('ul');
	if(direction=='down') {
		root_item.addClassName('hoverable_on');
		dd_list.show();
	} else {
		root_item.removeClassName('hoverable_on');
		dd_list.hide();
	}
}

function insertImage(name,number,height,width)
{ 
	var FirstPart = '<img hspace="5" height="' + height + '" width="' + width + '" vspace="0" style="margin-left:10px;margin-top:10px;margin-bottom:10px;" border="2" align="right" alt="" src="/files/image/';
	var LastPart = '.jpg" />';
	var randnum = Math.floor(Math.random() * number) + 1;
	document.write(FirstPart + name + randnum + LastPart);
}

var features;
var num_features;
var cur_feature = 0;
Event.observe(window,'load',function() {
	features = $$('#features img');
	if(features.size() > 1) {
		num_features = features.size();
		setTimeout('nextFeature()', 5000);
	}
});
function nextFeature() {
	new Effect.Fade(features[cur_feature], { duration: 1.3 });
	if(cur_feature < (num_features - 1)) {
		cur_feature++;
	} else {	
		cur_feature = 0;
	}
	new Effect.Appear(features[cur_feature], { duration: 1.3 });
	setTimeout('nextFeature()', 5000);
}