/*********************************************************************
* Browser.js - A browser screening class (used with dClass.js) *
* Copyright © 2000-2002, 5square Software (info@5squaresoftware.com) *
* Version $Id$ *
*********************************************************************/
/*
* SET THESE VARIABLES
* upgrade_action values mean:
* 1 = print out default upgrade page (I supplied)
* 2 = specify upgrade page (you supply)
* 3 = suppress errors (may cause loss of functionality)
* 4 = fork (you supply the browser and page pairs)
* 5 = don't do anything - see the errors
*/
var upgrade_action = 2;
var upgrade_page = "upgrade.html";
/*********************************************************************
**********DON'T EDIT BELOW THIS POINT UNLESS YOU FEEL LIKE IT*********
*********************************************************************/
//functions to handle bad browsers
function errorFunc() { return true; }
function upgrade(){
if(upgrade_action == 1){
document.open();
document.writeln('Upgrade Your Browser');
document.writeln('
');
document.writeln('In order to view this site, please upgrade your browser.');
document.writeln('
Click here to go to Netscape');
document.writeln('
Click here to go to Microsoft');
document.writeln('
');
document.close()
//suppress further errors
window.onerror = errorFunc;
}
else if (upgrade_action == 2) window.location = upgrade_page;
else if (upgrade_action == 3) {
//suppress further errors
window.onerror = errorFunc;
}
else if (upgrade_action == 4) {
//FORKING NOT DONE
//suppress further errors
window.onerror = errorFunc;
}
else if (upgrade_action == 5){
//do nothing
}
else {
//suppress further errors
window.onerror = errorFunc;
}
}
function dontUpgrade() { return true; }
//construct browser objects
function Browser (){
this.browser = navigator.appName;
this.version = parseFloat(navigator.appVersion);//returns the 'compatible' version
this.width = window.innerWidth;
this.height = window.innerHeight;
//platforms
this.isMac = (navigator.userAgent.indexOf('PPC') >= 0 || navigator.userAgent.indexOf('Mac') >= 0) ? true : false ;
this.isWin = (navigator.userAgent.indexOf("Win")>=0 || navigator.userAgent.indexOf("Windows 95")>=0 || navigator.userAgent.indexOf("Windows 98")>=0 || navigator.userAgent.indexOf("Windows NT")>=0 ) ? true : false ;
//browser definitions
this.isIE4_01 = (navigator.appVersion.indexOf('MSIE 4.01') != -1) ? true : false ;
this.isIE4_5 = (navigator.appVersion.indexOf('MSIE 4.5') != -1) ? true : false ;
this.isIE5 = (navigator.appVersion.indexOf('MSIE 5.0') != -1) ? true : false ;
this.isNN3_01 = (this.version == 3.01 && this.browser == 'Netscape') ? true : false ;
this.isNN4_61 = (this.version == 4.61 && this.browser == 'Netscape') ? true : false ;
this.isNN4_73 = (this.version == 4.73 && this.browser == 'Netscape') ? true : false ;
if(navigator.vendor && navigator.product){
this.isNN6 = (navigator.vendor == 'Netscape6' || navigator.product == 'Gecko') ? true : false ;//any Gecko browser
}
this.isDOMBrowser = (document.getElementById) ? true : false ;
this.isMacIE5 = (this.isIE5 && this.isMac) ? true : false ;
this.isMacNN6 = (this.isMac && this.isNN6) ? true : false;
this.isWinNN6 = (this.isWin && this.isNN6) ? true : false;
this.isWinIE4Plus = (this.isWin && this.isIE4Plus) ? true : false;
//groups of browsers for screening -- add your own if you want
this.isNN4Plus = ((this.version >= 4) && (this.browser == "Netscape")) ? true : false ;
this.isIE4Plus = ((this.version >= 4) && (this.browser == "Microsoft Internet Explorer")) ? true : false ;
this.isNN6Plus = ((this.version >= 5) && (this.browser == "Netscape")) ? true : false ;
//this.DhtmlBrowser = (this.isNN4Plus || this.isIE4Plus);
this.DhtmlBrowser = (this.isNN6Plus || this.isIE4Plus || this.isDOMBrowser);
//handle bad browsers
this.badBrowser = !this.DhtmlBrowser;
this.upgradeAction = (this.badBrowser) ? upgrade : dontUpgrade ;
}
var client = new Browser();
client.upgradeAction();