hey I have been trying for hours and I don't understand why the following does not work with IE but other works. The problem that I'm having is the the background of the parent link, which is a span with an id assigned, does not animate the background image set via CSS. I get an error that says 'Undefined' is null or is not an object
$('a.inactive').click(function(self) {
var parent = $(this).parent();
if (parent.css('background-position-x')) {
var pos = parseInt(parent.css('background-position-x').split(' ')[0]);
} else {
var pos = parseInt(parent.css('background-position').split(' ')[0]);
};
$.ajax({
type: "GET",
url: "somepage.php",
data: "id="+parent.attr('id').replace('inactive-',''),
complete: function(){
//alert("Data Saved: ");
if(pos < 0) {
parent.animate({backgroundPosition: '(0px 0px)'}, {duration:600});
} else {
parent.animate({backgroundPosition: '(-39px 0px)'}, {duration:600});
}
//parent.attr('class',$(this).className.replace(/sprite-hover-(\w+)-off/gi,'active1') );
},
async: false
});
});
The Code below is from Alexander Farkas
(function(jQuery){
$.extend($.fx.step,{
backgroundPosition: function(fx) {
if (fx.state === 0 && typeof fx.end == 'string') {
var start = $.curCSS(fx.elem,'backgroundPosition');
start = toArray(start);
fx.start = [start[0],start[2]];
var end = toArray(fx.end);
fx.end = [end[0],end[2]];
fx.unit = [end[1],end[3]];
}
var nowPosX = [];
nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];
function toArray(strg){
strg = strg.replace(/left|top/g,'0px');
strg = strg.replace(/right|bottom/g,'100%');
strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
}
}
});
})(jQuery);