/*
	file update 1/1/03
	this includes will provide functions for the following:
	 check platform
	to determine correct style sheet
	 check browser
	to pass to flash the variable 'useGate', set to TRUE if need to call a special 
	gate,asp file when using popups from flash
	
	still not sure best way to check for newest browser w/o hand coding it
	could it be convert to a number and tested? would that strip the text away?
	
*/
// TESTING
/*
document.write("All Data = "+_browserCheck()+"<br />");
document.write("Platform = "+_browserCheck("platform")+"<br />");
document.write("Use gate.asp? "+_browserCheck("gate")+"<br />");
*/
// set up global document variables for other scripts to use
//document.usegate = _browserCheck("gate");
document.sPlatform = _browserCheck("platform");

// GATE CHECK FUNCTION
function _browserCheck(task){
	/* 
	this function will use brower info to determine info to return
	diffent value will be returned depending on tasks
	   possible tasks (gate, platform, ...more later?)
	   properties of object
	  	  .browser; .platform; .version; .majorver; .minorver;
	*/ 
	var sPassedValue = String(task).toLowerCase();
	var InfoObject = new BrowserDetector(navigator.userAgent);
	
// big switch based on task
	switch(sPassedValue){
		case "gate" :
			return _gateCheck(InfoObject);
		case "platform" :
			return InfoObject.platform;
		default :
			return new Array(InfoObject.browser,InfoObject.platform,InfoObject.version);
	}
}
// GATE CHECK FUNCTION
function _gateCheck(fObject){
	/*
	value flash will pass for the 'useGate' variable
	
	the gate shoulld only need to get used on:
		netscape earlier than 4.6 on mac/win
		explorer earlier than 5 on mac
	*/
	// is version num is high enough no matter the browser?
	if (fObject.version>=4) {
		// meets base now need browser specific checks
		switch (fObject.browser){
			case "Netscape" || "Navigator":
				// need a secondary check
				if(fObject.version>4.6){
					return false;
				}else{
					return true;
				}
			case "Microsoft Internet Explorer" || "IE" :
				// need a secondary check
				if(fObject.version<5 && String(fObject.platform).indexOf("Mac") != -1){
					return true;
				}else{
					return false;
				}

			default:
				return false;
	   	}
	
	 }else{
	 	// no matter what the plat not new enough- need gate
	 	return true;
	 }

}

/*
BrowserDetector()
Parses User-Agent string into useful info.
Source: Webmonkey Code Library
(http://www.hotwired.com/webmonkey/javascript/code_library/)
Author: Richard Blaylock
Author Email: blaylock@wired.com

Usage: var bd = new BrowserDetector(navigator.userAgent);
*/
// Utility function to trim spaces from both ends of a string
function Trim(inString) {
	  var retVal = "";
	  var start = 0;
	  while ((start < inString.length) && (inString.charAt(start) == ' ')) {
		start++;
	  }
	  var end = inString.length;
	  while ((end > 0) && (inString.charAt(end - 1) == ' ')) {
		end++;
	  }
	  retVal = inString.substring(start, end);
	  return retVal;
}

function BrowserDetector(ua) {
	
	// Defaults
	  this.browser = "Unknown";
	  this.platform = "Unknown";
	  this.version = "";
	  this.majorver = "";
	  this.minorver = "";
	
	  uaLen = ua.length;
	
	// ##### Split into stuff before parens and stuff in parens
	  var preparens = "";
	  var parenthesized = "";
	
	  i = ua.indexOf("(");
	  if (i >= 0) {
		preparens = Trim(ua.substring(0,i));
			parenthesized = ua.substring(i+1, uaLen);
			j = parenthesized.indexOf(")");
			if (j >= 0) {
			  parenthesized = parenthesized.substring(0, j);
			}
	  }
	  else {
		preparens = ua;
	  }
	
	// ##### First assume browser and version are in preparens
	// ##### override later if we find them in the parenthesized stuff
	  var browVer = preparens;
	
	  var tokens = parenthesized.split(";");
	  var token = "";
	// # Now go through parenthesized tokens
	  for (var i=0; i < tokens.length; i++) {
		token = Trim(tokens[i]);
			//## compatible - might want to reset from Netscape
			if (token == "compatible") {
			  //## One might want to reset browVer to a null string
			  //## here, but instead, we'll assume that if we don't
			  //## find out otherwise, then it really is Mozilla
			  //## (or whatever showed up before the parens).
			//## browser - try for Opera or IE
		}
			else if (token.indexOf("MSIE") >= 0) {
		  browVer = token;
		}
		else if (token.indexOf("Opera") >= 0) {
		  browVer = token;
		}
			//'## platform - try for X11, SunOS, Win, Mac, PPC
		else if ((token.indexOf("X11") >= 0) || (token.indexOf("SunOS") >= 0) ||
	(token.indexOf("Linux") >= 0)) {
		  this.platform = "Unix";
			}
		else if (token.indexOf("Win") >= 0) {
		  this.platform = token;
			}
		else if ((token.indexOf("Mac") >= 0) || (token.indexOf("PPC") >= 0)) {
		  this.platform = token;
			}
	  }
	
	  var msieIndex = browVer.indexOf("MSIE");
	  if (msieIndex >= 0) {
		browVer = browVer.substring(msieIndex, browVer.length);
	  }
	
	  var leftover = "";
	  if (browVer.substring(0, "Mozilla".length) == "Mozilla") {
		this.browser = "Netscape";
			leftover = browVer.substring("Mozilla".length+1, browVer.length);
	  }
	  else if (browVer.substring(0, "Lynx".length) == "Lynx") {
		this.browser = "Lynx";
			leftover = browVer.substring("Lynx".length+1, browVer.length);
	  }
	  else if (browVer.substring(0, "MSIE".length) == "MSIE") {
		this.browser = "IE";
		leftover = browVer.substring("MSIE".length+1, browVer.length);
	  }
	  else if (browVer.substring(0, "Microsoft Internet Explorer".length) ==
	"Microsoft Internet Explorer") {
		this.browser = "IE"
			leftover = browVer.substring("Microsoft Internet Explorer".length+1,
	browVer.length);
	  }
	  else if (browVer.substring(0, "Opera".length) == "Opera") {
		this.browser = "Opera"
		leftover = browVer.substring("Opera".length+1, browVer.length);
	  }
	
	  leftover = Trim(leftover);
	
	  // # Try to get version info out of leftover stuff
	  i = leftover.indexOf(" ");
	  if (i >= 0) {
		this.version = leftover.substring(0, i);
	  }
	  else
	  {
		this.version = leftover;
	  }
	  j = this.version.indexOf(".");
	  if (j >= 0) {
		this.majorver = this.version.substring(0,j);
		this.minorver = this.version.substring(j+1, this.version.length);
	  }
	  else {
		this.majorver = this.version;
	  }
	
	
} // function BrowserCap