var jky = {};


jky.init = function ()
{
	jky.initThumb();
}


jky.initThumb = function ()
{
	var thumbs = $(".thumbnail").mousemove(jky.updateBackgroundPosition);
	
}

jky.updateBackgroundPosition = function (e)
{
	var x = e.layerX;
	
	var url = $(this).css("background-image");
	url = url.substr(4);
	url = url.substr(0, url.length - 1);
	
	
	var n = url.split("_");
	if(n.length > 1) 
	{
		n = n[1];
		n = n.split(".")[0];
		
		if(x == 0) x = 1;
		var part = Math.floor(284 / n);
		
		
		
		var pos = (n - Math.floor(x / part)) * 284;
		
		$(this).css("background-position", pos)
	}
	
}

$(document).ready(function(){
	jky.init();
});