How open a element programmatically
//Thank to @Formstone https://github.com/Formstone/Selecter/blob/master/src/jquery.fs.selecter.js
if (window.document.createEvent) { // All
var evt = window.document.createEvent("MouseEvents");
evt.initMouseEvent("mousedown", false, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
el.dispatchEvent(evt);
} else if (el.fireEvent) { // IE
el.fireEvent("onmousedown");
}