Set background image in case of error
JavaScript
var errorImage = "http://www.unifymatch.com/images/error_button.png";
var myImageUrl="nosuchimage.jpg";
var $image = $("<img />");
$image.on("error",function() {
$('body').css({
"background-image": 'url('+errorImage+')'
});
}).on("load",function() {
$('body').css({
"background-image": 'url(' + myImageUrl + ')'
});
}).attr("src",myImageUrl);