Easy way to test if created element is a valid Tag for current browser

JSisValidTag.js

Object.defineProperty && !Element.prototype.hasOwnProperty("isValidTag") ? Object.defineProperty(Element.prototype, "isValidTag", {
        value: function(b) {
            if (this.tagName) {
                var c = "acronym applet basefont bgsound big blink center dir font frame frameset hgroup isindex listing marquee multicol nextid nobr noembed noframes plaintext spacer strike tt xmp".split(" "),
                    a = this.tagName;
                return a.match(/[^a-zA-Z0-9]/) ? !1 : -1 !== b && -1 !== c.indexOf(a.toLowerCase()) ? b || !1 : "[object HTMLUnknownElement]" !== Object.prototype.toString.call(document.createElement(a))
            }
            return !1
        }
    }) :
    Element.prototype.isValidTag = function(b) {
        if (this.tagName) {
            var c = "acronym applet basefont bgsound big blink center dir font frame frameset hgroup isindex listing marquee multicol nextid nobr noembed noframes plaintext spacer strike tt xmp".split(" "),
                a = this.tagName;
            return a.match(/[^a-zA-Z0-9]/) ? !1 : -1 !== b && -1 !== c.indexOf(a.toLowerCase()) ? b || !1 : "[object HTMLUnknownElement]" !== Object.prototype.toString.call(document.createElement(a))
        }
        return !1
    };

//  us as simple as
if (!document.createElement('blink').isValidTag()) {
	var head = document.head || document.getElementsByTagName("head")[0],
		style = document.createElement("style");
	/* Standard (Mozilla) */
	style.appendChild(document.createTextNode("@keyframes blink { from { opacity: 1; } to { opacity: 0; } }"));
	/* Chrome & Safari */
	style.appendChild(document.createTextNode("@-webkit-keyframes blink { from { opacity: 1; } to { opacity: 0; } }"));
	style.appendChild(document.createTextNode("blink { -webkit-animation: blink 600ms infinite; animation: blink 600ms infinite; text-decoration: blink; }"));
	head.appendChild(style);
}