var prefix = 'n';

var sufix = prefix + 'o' + prefix;

var mycss = new Array();

if(document.styleSheets[0].cssRules) {

	mycss = document.styleSheets[0].cssRules;

} else {

	mycss = document.styleSheets[0].rules;

}

mycss[0].style.display = sufix + 'e';