function Zoom(img, w, h)  {
	window.open(img,'zoom'+w+h,'toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,copyhistory=no,width='+w+',height='+h);
}

function PopUp(img, w, h)  {
	window.open(img,'zoom'+w+h,'toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=no,width='+w+',height='+h);
}

function linkToContent(link) {
	window.opener.top.location=link;
	window.opener.focus();
	window.close();
}

function randomImage() {
	imageNumber= Math.ceil(Math.random()*35);
	$("#start_riders").css("background-image", "url(/_img/riders/riders"+imageNumber+".jpg)");
	window.setTimeout("randomImage()", 3000);
}