function vercheck(iev,nnv) {


	if (navigator.appName.charAt(0) == "M") {

		if (navigator.userAgent.indexOf("Win") < 0 && navigator.appVersion.charAt(0) <= 3) {
			var aver = parseFloat(navigator.appVersion);
		} else {
			var sp = navigator.appVersion.indexOf("E");
			var ep =  navigator.appVersion.indexOf(";",sp);
			var aver = parseFloat(navigator.appVersion.substring(sp+2,ep));
		}

		if (iev != 0 && iev <= aver) {
			return true;
		} else {
			return false;
		}

	} else if (navigator.appName.charAt(0) == "N") {

		var ep = navigator.appVersion.indexOf(" ");
		var aver = parseFloat(navigator.appVersion.substring(0,ep));
		if (nnv != 0 && nnv <= aver) {
			return true;
		} else {
			return false;
		}

	} else {
		return false;
	}

}