function optimize(requireVersion){
	var version = deconcept.SWFObjectUtil.getPlayerVersion();
	if (document.getElementById && (version['major'] >= requireVersion)) {
		setActiveStyleSheet("swfcss");
		return true;
	}else{
		return false;
	}
}
function setActiveStyleSheet(title) {
	var linkElem;
	var i;
	for(i=0; (linkElem = document.getElementsByTagName("link")[i]); i++) {
		if(linkElem.getAttribute("rel").indexOf("style") != -1 && linkElem.getAttribute("title")) {
			linkElem.disabled = true;
			if(linkElem.getAttribute("title") == title) linkElem.disabled = false;
		}
	}
}