var platform = 'unknown platform', ua = navigator.userAgent;
var oses = ['Windows','iPhone OS','(Intel |PPC )?Mac OS X','Linux'].join('|');
var pOS = new RegExp('((' + oses + ') [^ \);]*)').test(ua) ? RegExp.$1 : null;
if (!pOS) pOS = new RegExp('((' + oses + ')[^ \);]*)').test(ua) ? RegExp.$1 : null;
var pName = /(Chrome|MSIE|Safari|Opera|Firefox)/.test(ua) ? RegExp.$1 : null;
var vre = new RegExp('(Version|' + pName + ')[ \/]([^ ;]*)');
var pVersion = (pName && vre.test(ua)) ? RegExp.$2 : null;
var platform = (pOS && pName && pVersion) ? pName + ' ' + pVersion + ' on ' + pOS : 'unknown platform';
var ie7 =  pName == 'MSIE' && pVersion == 7 ? true : false;

var browserProperties = {
		platform: platform,
		OS: pOS,
		name: pName,
		version: pVersion,
		isIE7: ie7
}