sshow_load_img.js

function sshow_load_img1(src, loaded) {
    /* NOT possible to document.createElement('canvas').getContext('2D').drawImage( img  or img.get() ) */
    var img = $("<img />").attr('src', src )
        .load(function() {
        if (!this.complete || typeof this.naturalWidth == "undefined" || this.naturalWidth == 0) {
            alert('broken image!');
        } else {
            if (loaded) loaded(img);
        }
    });
}

function sshow_load_img2(src, loaded) {
    /* Possible to document.createElement('canvas').getContext('2D').drawImage( img ) */
    var img = new Image();
    img.onload = function() {
        if ( loaded ) loaded (img);
    };
    img.src = src;
}


function sshow_load_img3(src, loaded) {
    var img = $("<img />").attr('src', src)
        .load(function() {
            var img = new Image();
            img.src = src;
            if (loaded) loaded(img);
    });
}