function degradeForIE(){
var html5elements = "address|article|aside|audio|canvas|command|datalist|details|dialog|figure|figcaption|footer|header|hgroup|keygen|mark|meter|menu|nav|progress|ruby|section|time|video".split('|');
	for(var i = 0; i < html5elements.length; i++){
		document.createElement(html5elements[i]);
	}

}

degradeForIE();