Varnimate

varnimate.js

function varnimate(obj,props,duration,start)
{
	var now = new Date().getTime();
	var atual = new Date().getTime();
	//console.log(atual);
	if (start+duration <= atual)
	{
		for (p in props)
		{
			obj[p] = props[p]
		}
		return;	
	}
	if (start == undefined)
	{
		var start = new Date().getTime();
	}

	passou = atual-start;
	passou = passou/duration;

	for (p in props)
	{
		valor = passou*(props[p]-obj[p]);
		calc = valor+obj[p];
		obj[p] = calc;
	}
	//console.log(calc);
	
	t = (new Date().getTime() - now);
	setTimeout(function(){ varnimate(obj, props, duration, start); },16 - t);
}