[jQuery] Can I use css to set background image dynamically

[jQuery] Can I use css to set background image dynamically


I am trying to use css("background-image",image) but it does not set
the image as background. What am I doing wrong. here is the code.
function changeit(imgnum){
$(".story").each(function(i){
var item = $(".story").eq(i);
    var image = $(".fullst").eq(i).html();
if ( item != "") {
    if(i != imagenum){
    $(item).fadeOut("slow");
    }
    else{
        $(item).css("background-image",image).fadeIn("slow");
    }
}
});
thanks in advance for help