if (!Element.prototype.fadeIn) {
Element.prototype.fadeIn = function(){
let ms = !isNaN(arguments[0]) ? arguments[0] : 400,
func = typeof arguments[0] === 'function' ? arguments[0] : (
typeof arguments[1] === 'function' ? arguments[1] : null
);
this.style.opacity = 0;
this.style.filter = "alpha(opacity=0)";
this.style.display = "inline-block";
this.style.visibility = "visible";
let $this = this,
opacity = 0,
timer = setInterval(function() {
opacity += 50 / ms;
if( opacity >= 1 ) {
clearInterval(timer);
opacity = 1;
if (func) func('done!');
}
$this.style.opacity = opacity;
$this.style.filter = "alpha(opacity=" + opacity * 100 + ")";
}, 50 );
}
}
if (!Element.prototype.fadeOut) {
Element.prototype.fadeOut = function(){
let ms = !isNaN(arguments[0]) ? arguments[0] : 400,
func = typeof arguments[0] === 'function' ? arguments[0] : (
typeof arguments[1] === 'function' ? arguments[1] : null
);
let $this = this,
opacity = 1,
timer = setInterval( function() {
opacity -= 50 / ms;
if( opacity <= 0 ) {
clearInterval(timer);
opacity = 0;
$this.style.display = "none";
$this.style.visibility = "hidden";
if (func) func('done!');
}
$this.style.opacity = opacity;
$this.style.filter = "alpha(opacity=" + opacity * 100 + ")";
}, 50 );
}
}
document.getElementById(evt.target.id).fadeIn();
document.getElementById(evt.target.id).fadeIn(alert);
document.getElementById(evt.target.id).fadeIn(1500, alert);