Positioning the background via separate background-position-x/y
is a feature that Internet Explorer introduced but never made it into a W3C specification. Any recommendations to add it to the spec have since been denied.
See:
http://snook.ca/archives/html_and_css/background-position-x-y
You can always create your own little plugin, it’s not that hard.
Using jQuery 1.8 we now have access to the $.Animation method that gives us the animated values directly without to much work, so we can do something like :
$.fn.animateBG = function(x, y, speed) {
var pos = this.css('background-position').split(' ');
this.x = pos[0] || 0,
this.y = pos[1] || 0;
$.Animation( this, {
x: x,
y: y
}, {
duration: speed
}).progress(function(e) {
this.css('background-position', e.tweens[0].now+'px '+e.tweens[1].now+'px');
});
return this;
}
And then to use it we can do:
$("#background").animateBG(x-value, y-value, speed);
FIDDLE
This is something I whipped up for another answer some days ago, and only works with pixels and does have some limitations, but it’s simple and should work for most cases.
I guess something like this would do what you want:
$(this).parent()
.css('background-position', '0 19px');
.animateBG(0, 0, 1000);