function createCSS(selector, declaration) {
	// test for IE
	var ua = navigator.userAgent.toLowerCase();
	var isIE = (/msie/.test(ua)) && !(/opera/.test(ua)) && (/win/.test(ua));

	// create the style node for all browsers
	var style_node = document.createElement("style");
	style_node.setAttribute("type", "text/css");
	style_node.setAttribute("media", "all"); 

	// append a rule for good browsers
	if (!isIE) style_node.appendChild(document.createTextNode(selector + " {" + declaration + "}"));

	// append the style node
	document.getElementsByTagName("head")[0].appendChild(style_node);

	// use alternative methods for IE
	if (isIE && document.styleSheets && document.styleSheets.length > 0) {
		var last_style_node = document.styleSheets[document.styleSheets.length - 1];
		if (typeof(last_style_node.addRule) == "object") last_style_node.addRule(selector, declaration);
	}
};