function CheckBrowserVersions() { 
	if (navigator.userAgent.indexOf('Opera') > -1) { 
                location.href="ARComBrowser.htm"; 
        } 
        else { 
        	if (navigator.appName == "Netscape") { 
                        if (parseFloat(navigator.appVersion) < 4.0) { 
                                location.href="ARComBrowser.htm";
			} 
                } 
                else { 
                        if (navigator.appName == "Microsoft Internet Explorer") { 
                                if (parseFloat(navigator.appVersion) < 4.0) { 
                                        location.href="ARComBrowser.htm";
				} 
                        } 
                        else { 
                                location.href="ARComBrowser.htm"; 
                        } 
                } 
        } 
}