/********************************************************************************
 * F_util.js
 * JavaScript functions by Flying @ Flying's World, Nov 2001.
 ********************************************************************************/

//========================================
// Modified from Ultimate Client Sniffer
// @ http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
// by Flying
//
// Capability:
// (1) Browser vendor:
//	isNN, isIE, isOpera, isHotJava, isWebTV, isTVNav, isAOLTV
// (2) Browser version numbers:
//	major (integer), minor (float)
// (3) Browser vendors and major version numbers:
//	isNN2, isNN3, isNN4, isNN4up, isNN6, isNN6up, isGecko,
//	isIE3, isIE4, isIE4up, isIE5, isIE5up, isIE5_5, isIE5_5up, isIE6, isIE6up,
//	isHotJava3, isHotJava3up,
//	isOpera2, isOpera3, isOpera4, isOpera5, isOpera5up
// (4) JavaScript version numbers and support:
//	js (float),
//	hasDOM
// (5) OS platforms and version numbers:
//	onWin, onWin16, onWin32, onWin31, onWin95, onWinNT, onWin98, onWinMe, onWin2k, onWinXP
//	onOS2,
//	onMac, onMac68k, onMacPPC,
//	onUnix,
//	onSun, onSun4, onSun5, onSunx86,
//	onIrix, onIrix5, onIrix6,
//	onHPUX, onHPUX9, onHPUX10,
//	onAIX, onAIX1, onAIX2, onAIX3, onAIX4
//	onLinux, onSco, onUnixware, onMpras, onReliant,
//	onDEC, onSinix, onFreeBSD, onBSD,
//	onVMS
//
// Bug:
// This code will crash IE3 on Mac if the page containing this script is reloaded.
// If you want to avoid this problem, turn off replace the object-oriented code with plain boolean variables.
function clientInfo() {
	// Browser agent information
	var agent = navigator.userAgent.toLowerCase();
		
	// Browser versions
	this.major = parseInt(navigator.appVersion);
	this.minor = parseFloat(navigator.appVersion);
		
	// Browser vendors and versions
	this.isNN    = ((agent.indexOf("mozilla") != -1) &&
	                (agent.indexOf("spoofer") == -1) &&
	                (agent.indexOf("compatible") == -1) &&
	                (agent.indexOf("opera") == -1) &&
	                (agent.indexOf("webtv") == -1) &&
	                (agent.indexOf("hotjava") == -1) );
	this.isNN2   = (this.isNN && (this.major == 2));
	this.isNN3   = (this.isNN && (this.major == 3));
	this.isNN4   = (this.isNN && (this.major == 4));
	this.isNN4up = (this.isNN && (this.major >= 4));
	this.isNNav  = (this.isNN && 
	                ((agent.indexOf(";nav") != -1) || (agent.indexOf("; nav") != -1)) );
	this.isNN6   = (this.isNN && (this.major == 5));
	this.isNN6up = (this.isNN && (this.major >= 5));
	this.isGecko = (agent.indexOf("gecko") != -1);
	this.isIE      = ((agent.indexOf("msie") != -1) &&
	                  (agent.indexOf("opera") == -1) );
	this.isIE3     = (this.isIE && (this.major < 4));
	this.isIE4     = (this.isIE && (this.major == 4) && (agent.indexOf("msie 4") != -1));
	this.isIE4up   = (this.isIE && (this.major >= 4));
	this.isIE5     = (this.isIE && (this.major == 4) && (agent.indexOf("msie 5.0") != -1));
	this.isIE5up   = (this.isIE && (! this.isIE3) && (! this.isIE4));
	this.isIE5_5   = (this.isIE && (this.major == 4) && (agent.indexOf("msie 5.5") != -1));
	this.isIE5_5up = (this.isIE && (! this.isIE3) && (! this.isIE4) && (! this.isIE5));
	this.isIE6     = (this.isIE && (this.major == 4) && (agent.indexOf("msie 6.") != -1));
	this.isIE6up   = (this.isIE && (! this.isIE3) && (! this.isIE4) && (! this.isIE5) && (! this.isIE5_5));
	this.isAOL  = (agent.indexOf("aol") != -1);	// isAOL, isAOL3 and isAOL4 are not reliable on AOL4
	this.isAOL3 = (this.isAOL && this.isIE3);
	this.isAOL4 = (this.isAOL && this.isIE4);
	this.isAOL5 = (agent.indexOf("aol 5") != -1);
	this.isAOL6 = (agent.indexOf("aol 6") != -1);
	this.isWebTV = (agent.indexOf("webtv") != -1);
	this.isTVNav = ((agent.indexOf("navio") != -1) || (agent.indexOf("navio_aoltv") != -1));
	this.isAOLTV = this.isTVNav;
	this.isHotJava    = (agent.indexOf("hotjava") != -1);
	this.isHotJava3   = (this.isHotJava && (this.major == 3));
	this.isHotJava3up = (this.isHotJava && (this.major >= 3));
	
	// JavaScript versions
	if (this.isNN2 || this.isIE3)
		this.js = 1.0;
	else if (this.isNN3)
		this.js = 1.1;
	else if (this.isOpera5up)
		this.js = 1.3;
	else if (this.isOpera5)
		this.js = 1.1;
	else if ((this.isNN4 && (this.minor <= 4.05)) || this.isIE4)
		this.js = 1.2;
	else if ((this.isNN4 && (this.minor > 4.05)) || this.isIE5)
		this.js = 1.3;
	else if (this.isHotJava3up)
		this.js = 1.4;
	else if (this.isNN6 || this.isGecko)
		this.js = 1.5;
	else if (this.isNN6up)
		this.js = 1.5;
	else if (this.isIE5up)
		this.js = 1.3;	// IE5up on Mac is 1.4 (check the below in the "OS platforms" section)
	else
		this.js = 0.0;	// unidentified JavaScript support
	this.hasDOM = (this.isNN6up || this.isIE5up);
	
	// OS platforms
	this.onWin   = ((agent.indexOf("win") != -1) ||
	                (agent.indexOf("16bit") != -1) );
	this.onWin31 = ((agent.indexOf("windows 3.1") != -1) ||
	                (agent.indexOf("16bit") != -1) ||
	                (agent.indexOf("windows 16-bit") != -1) );
	this.onWin95 = ((agent.indexOf("win95") != -1) ||	// not reliable if is Opera
	                (agent.indexOf("windows 95") != -1) );
	this.onWinNT = ((agent.indexOf("winnt") != -1) ||
	                (agent.indexOf("windows nt") != -1) );
	this.onWin98 = ((agent.indexOf("win98") != -1) ||	// not reliable
	                (agent.indexOf("windows 98") != -1) );	
	this.onWin2k = (agent.indexOf("windows nt 5.0") != -1);
	this.onWinMe = (agent.indexOf("win 9x 4.90") != -1);
	this.onWinXP = (agent.indexOf("windows nt 5.1") != -1);
	this.onWin16 = ((agent.indexOf("win16") != -1) ||
	                (agent.indexOf("16bit") != -1) ||
	                (agent.indexOf("windows 3.1") != -1) ||
	                (agent.indexOf("windows 16-bit") != -1) );
	this.onWin32 = (this.onWin95 || this.onWinNT || this.onWin98 ||
	                ((this.major >= 4) && (navigator.platform == "Win32")) ||
	                (agent.indexOf("win32") != -1) ||
	                (agent.indexOf("32bit") != -1) );
	this.onOS2 = ((agent.indexOf("os/2") != -1) ||
	              (navigator.appVersion.indexOf("OS/2") != -1) &&
	              (agent.indexOf("ibm-webexplorer") != -1) );
	this.onMac    = (agent.indexOf("mac") != -1);
	if (this.onMac && this.isIE5up)	// hack IE5up JavaScript version for Mac
		this.js = 1.4;
	this.onMac68k = (this.onMac &&
	                 ((agent.indexOf("68k") != -1) ||
	                  (agent.indexOf("68000") != -1) ) );
	this.onMacPPC = (this.onMac &&
	                 ((agent.indexOf("ppc") != -1) ||
	                  (agent.indexOf("powerpc") != -1) ) );
	this.onSun    = (agent.indexOf("sunos") != -1);
	this.onSun4   = (agent.indexOf("sunos 4") != -1);
	this.onSun5   = (agent.indexOf("sunos 5") != -1);
	this.onSunx86 = (this.onSun && (agent.indexOf("i86") != -1));
	this.onIrix  = (agent.indexOf("irix") != -1);
	this.onIrix5 = (agent.indexOf("irix 5") != -1);
	this.onIrix6 = ((agent.indexOf("irix 6") != -1) ||
	                (agent.indexOf("irix6") != -1) );
	this.onHPUX   = (agent.indexOf("hp-ux") != -1);
	this.onHPUX9  = (this.onHPUX && (agent.indexOf("09.") != -1));
	this.onHPUX10 = (this.onHPUX && (agent.indexOf("10.") != -1));
	this.onAIX  = (agent.indexOf("aix") != -1);
	this.onAIX1 = (agent.indexOf("aix 1") != -1);
	this.onAIX2 = (agent.indexOf("aix 2") != -1);
	this.onAIX3 = (agent.indexOf("aix 3") != -1);
	this.onAIX4 = (agent.indexOf("aix 4") != -1);
	this.onLinux = (agent.indexOf("linux") != -1);
	this.onSCO = ((agent.indexOf("sco") != -1) ||
	              (agent.indexOf("unix_sv") != -1) );
	this.onUnixware = (agent.indexOf("unix_system_v") != -1);
	this.onMpras = (agent.indexOf("ncr") != -1);
	this.onReliant = (agent.indexOf("reliantunix") != -1);
	this.onDEC = ((agent.indexOf("dec") != -1) ||
	              (agent.indexOf("osf1") != -1) ||
	              (agent.indexOf("dec_alpha") != -1) ||
	              (agent.indexOf("alphaserver") != -1) ||
	              (agent.indexOf("ultrix") != -1) ||
	              (agent.indexOf("alphastation") != -1) );
	this.onSinix = (agent.indexOf("sinix") != -1);
	this.onFreeBSD = (agent.indexOf("freebsd") != -1);
	this.onBSD = (agent.indexOf("bsd") != -1);
	this.onUnix = ((agent.indexOf("x11") != -1) ||
	               this.onSun || this.onIrix || this.onHPUX || this.onSCO || this.onUnixware ||
	               this.onMpras || this.onReliant || this.onDEC || this.Sinux || this.onAIX ||
	               this.onLinux || this.onBSD || this.onFreeBSD );
	this.onVMS = ((agent.indexOf("vax") != -1) || (agent.indexOf("openvms") != -1));
}
// Obtain client platform information
var F_client = new clientInfo();


//========================================
// Reload the page if window is resized (to counter rendering bug in NN4)
function F_nnReloadOnResize( e, initURL ) {
	if (! F_client.isNN4) return;
	if (e == "_init") {
		this.url = initURL;
		this.pageWidth  = window.innerWidth;
		this.pageHeight = window.innerHeight;
		window.onresize = F_nnReloadOnResize;
	} else if ((this.pageWidth  != window.innerWidth) ||
	           (this.pageHeight != window.innerHeight) ) {
		window.location = this.url;
	}
}


//========================================
function F_wndResizeView( wnd, width, height ) {
	var defBrowserWidth  =  10;
	var defBrowserHeight = 120;
	if (F_client.isNN4up) {
		docWidth  = wnd.innerWidth;
		docHeight = wnd.innerHeight;
	} else if (F_client.isIE4up) {
		docWidth  = wnd.document.body.clientWidth;
		docHeight = wnd.document.body.clientHeight;
	} else {
		if (F_client.js >= 1.2) {
			wnd.resizeTo(width + defBrowserWidth, height + defBrowserHeight);	// estimated
			return true;
		} else {
			return false;
		}
	}
	offx = width  - docWidth;
	offy = height - docHeight;
	wnd.resizeBy(offx, offy);
	return true;
}


//========================================
function F_wndSetStatus( msg ) {
	window.status = msg;
 	return true;
}


//========================================
function F_wndOpenWindow( url, wndId, features ) {
	/* Possible features:
		toolbar, location, status, menubar, scrollbars, resizable, width, height
	 */
 	return window.open(url, wndId, features);
}


//========================================
function F_exploreDOM() {
	this.done = true;
	nodes = document.documentElement.lastChild.childNodes;
	str = "";
	for (i = 0; i < nodes.length; i++) {
		str += "'" + nodes[i].nodeName + "'\t'" + nodes[i].nodeType + "'\t'" + nodes[i].id  + "'\n";
	}
	alert(str);
}