$('#img-1').load(function(){
     someFunction1();
     loadIcons();
});

function loadIcons(){
        $('#gallery').append('<div class="icon" id="icon-1">');
        $('#icon-1').append('<span></span>');
        $('#icon-1').css({
            'top': parseInt(top),
            'left': parseInt(left)
        });
}

$(document).ready(function(){

    someFunction1()
    {
            $('#spinner').remove();
            $('#spinner-transparent').css({
                'opacity' : 0
            });
    }

    function loadIcons()
    {
        //code above
    }


    $('#img-1').one('load', function(){
          someFunction1();
          loadIcons();
        }).each(function() {
  if(this.complete) $(this).load();
});

var img_load_callback = function () {...};
var img = new Image();
img.onload = img_load_callback; // this must be set before img.src
img.src = 'whatever.jpg';