javascript - Jquery image slider works perfectly from right to left, but from left to right I cannot get it centered -

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i'm working on photography portfolio display/gallery slider.

i have half working prototype, cannot life figure out why centers images in 1 direction not other :s

http://jsfiddle.net/k88yg/3/

interestingly if resize window , call move_slide() function second time goes right place... happening? can shed light?

i believe quite quirky problem. fresh pair of eyes can me allot.

so far code:

jquery(window).load(function() {       //     function set_slide_width(add_extra) {         if (!add_extra) {add_extra = 0;}         var slide_width = 0;         $("#barely_slide article img").each(function(){             slide_width += $(this).outerwidth();         });         $("#barely_slide article").css("width",slide_width + add_extra);     }     //     set_slide_width();       //     function move_slide() {         var focus_margin = 0;         var img_real_height = 0;         //             var add_extra = 0;             //var prev_deduct = 0;         //         $("#barely_slide article img").each(function(){             //                 //if ($(this).attr("class") == "previous") {                 //  var theimage = new image();                 //  theimage.src = $(this).attr("src");                 //  var img_real_width = theimage.width;                 //  var img_real_width_padding = img_real_width + ($(this).outerwidth() - $(this).width());                 //  prev_deduct = img_real_width_padding - $(this).outerwidth();                 //}             //             if ($(this).attr("class") == "focus") {                     var theimage = new image();                     theimage.src = $(this).attr("src");                     var img_real_width = theimage.width;                     var img_real_width_padding = img_real_width + ($(this).outerwidth() - $(this).width());                     img_real_height = theimage.height;                     //                         add_extra = img_real_width_padding - $(this).outerwidth();                     //                 focus_margin += img_real_width_padding / 2;                 return false;             }             focus_margin += $(this).outerwidth();         });         //             set_slide_width(add_extra);         //         var container_center = $("#barely_slide").outerwidth() / 2;         var offset = container_center - focus_margin;         //console.dir(offset);         $("#barely_slide article").animate({"margin-left": offset }, "fast");             //             var img_height_offset = (img_real_height / 2) - 150;             $(".focus").animate({"height":img_real_height,"margin-top":-img_height_offset}, "fast");     }     //     move_slide();       //     var resize_timeout;     $(window).resize(function() {         cleartimeout(resize_timeout);         resize_timeout = settimeout(function(){                 move_slide();         },100);     });       //     $("#barely_slide article img").on("click", function(){         if ($(this).attr("class") == "focus") {return false;}          //             $("#barely_slide article img").removeclass("previous");             $("#barely_slide article .focus").addclass("previous");             $(".previous").animate({"height":300,"margin-top":0}, "fast");         //          $("#barely_slide article .focus").removeclass("focus");         $(this).addclass("focus");         move_slide();         return false;     });  });

i found solution works better. have change move_slide function:

function move_slide() {   var focus_margin = 0;   var img_real_height = 0;   var add_extra = 0;   $("#barely_slide article img").each(function(){     if ($(this).hasclass("focus")) {       var theimage = new image();       theimage.src = $(this).attr("src");       var img_real_width = theimage.width;       var img_real_width_padding = img_real_width + ($(this).outerwidth() - $(this).width());       img_real_height = theimage.height;        add_extra = img_real_width_padding - $(this).outerwidth();        focus_margin += img_real_width_padding / 2;       return false;     /***************** changes begin *************************/     } else if ($(this).hasclass("previous")) {       // if has previous class, calculate width height of 300.       var shrinked_width = 300 *  $(this).width() / $(this).height();       // add padding.       var img_width_width_padding = shrinked_width + ($(this).outerwidth() - $(this).width());       // update focus_margin       focus_margin += img_width_width_padding;     } else {       focus_margin += $(this).outerwidth();     }     /***************** changes end ***************************/   });   set_slide_width(add_extra);    var container_center = $("#barely_slide").outerwidth() / 2;   var offset = container_center - focus_margin;    $("#barely_slide article").animate({"margin-left": offset }, "fast");    var img_height_offset = (img_real_height / 2) - 150;   $(".focus").animate({"height":img_real_height,"margin-top":-img_height_offset}, "fast"); }

here jsfiddle: http://jsfiddle.net/jqalb/4/


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