function getBrowser(){
	var ua=window.navigator.userAgent;var b='';
	if(ua.indexOf("Opera")>=0)b='Opera';else
	if(ua.indexOf("Safari")>=0)b='Safari';else
	if(ua.indexOf("Gecko")>=0)b='Mozilla';else
	if(ua.indexOf("MSIE")>=0)b='IE';
	return b;
}