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Feature detect base64 support for images in mootools

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Browser.features.base64.js
JavaScript
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(function() {
var callback = function() {
Browser.Features = Object.merge(Browser.Features, {
base64: this.width == 1 && this.height == 1
});
// console.log(Browser.Features.base64); // true || false
};
new Element("img", {
// 1x1 px gif to test with
src: "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==",
events: {
load: callback,
error: callback
}
});
})();

is it humanly possible to make more mistakes on a less-than-10 lines snippet? hopefully it's now done and dusted.

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