function trackAndRedirect(imageUrl,redirectUrl) {
	pixel=new Image();
	pixel.src=imageUrl;
	pixel.onload=function(){window.location.href=redirectUrl;}
}

function trackAndRedirectExternal(imageUrl,redirectUrl) {
	pixel=new Image();
	pixel.src=imageUrl;
	pixel.onload=function(){window.open(redirectUrl, '_blank')}
}

function track(imageUrl,redirectUrl) {
	pixel=new Image();
	pixel.src=imageUrl;
}