/*
 * home page animation
 */
var bgclasses_index = 1;

var bgclasses = [
	'17px 17px',
	'-489px 17px',
	'-995px 17px',
	'-1501px 17px'
];

function bgclasses_index_inc()
{
	bgclasses_index++;
	if(bgclasses_index >= bgclasses.length){
		bgclasses_index = 0;
	}
}

function changebg()
{
	var main = document.getElementById("container");
	main.style.backgroundPosition = bgclasses[bgclasses_index];
	bgclasses_index_inc();
}

function init()
{
	setInterval(changebg, 5*1000);
}

window.onload=init;