//-------------------------------------------------------------------------------------------------------
// Javascript utility functions. Jonathan Smith 03/02/2002
// Version for Sandford Solutions pages
//-------------------------------------------------------------------------------------------------------

//-------------------------------------------------------------------------------------------------------
// added 30.10.2004

// Ultimate client-side JavaScript client sniff. Version 3.03
// (C) Netscape Communications 1999-2001.  Permission granted to reuse and distribute.
// Revised 17 May 99 to add is_nav5up and is_ie5up (see below).
// Revised 20 Dec 00 to add is_gecko and change is_nav5up to is_nav6up
//                      also added support for IE5.5 Opera4&5 HotJava3 AOLTV
// Revised 22 Feb 01 to correct Javascript Detection for IE 5.x, Opera 4, 
//                      correct Opera 5 detection
//                      add support for winME and win2k
//                      synch with browser-type-oo.js
// Revised 26 Mar 01 to correct Opera detection
// Revised 02 Oct 01 to add IE6 detection

// Everything you always wanted to know about your JavaScript client
// but were afraid to ask. Creates "is_" variables indicating:
// (1) browser vendor:
//     is_nav, is_ie, is_opera, is_hotjava, is_webtv, is_TVNavigator, is_AOLTV
// (2) browser version number:
//     is_major (integer indicating major version number: 2, 3, 4 ...)
//     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04 ...)
// (3) browser vendor AND major version number
//     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav6, is_nav6up, is_gecko, is_ie3,
//     is_ie4, is_ie4up, is_ie5, is_ie5up, is_ie5_5, is_ie5_5up, is_ie6, is_ie6up, is_hotjava3, is_hotjava3up,
//     is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up
// (4) JavaScript version number:
//     is_js (float indicating full JavaScript version number: 1, 1.1, 1.2 ...)
// (5) OS platform and version:
//     is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98, is_winme, is_win2k
//     is_os2
//     is_mac, is_mac68k, is_macppc
//     is_unix
//     is_sun, is_sun4, is_sun5, is_suni86
//     is_irix, is_irix5, is_irix6
//     is_hpux, is_hpux9, is_hpux10
//     is_aix, is_aix1, is_aix2, is_aix3, is_aix4
//     is_linux, is_sco, is_unixware, is_mpras, is_reliant
//     is_dec, is_sinix, is_freebsd, is_bsd
//     is_vms
//
// See http://www.it97.de/JavaScript/JS_tutorial/bstat/navobj.html and
// http://www.it97.de/JavaScript/JS_tutorial/bstat/Browseraol.html
// for detailed lists of userAgent strings.
//
// Note: you don't want your Nav4 or IE4 code to "turn off" or
// stop working when new versions of browsers are released, so
// in conditional code forks, use is_ie5up ("IE 5.0 or greater") 
// is_opera5up ("Opera 5.0 or greater") instead of is_ie5 or is_opera5
// to check version in code which you want to work on future
// versions.

    // convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is_ie5up to detect IE5.
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav2 = (is_nav && (is_major == 2));
    var is_nav3 = (is_nav && (is_major == 3));
    var is_nav4 = (is_nav && (is_major == 4));
    var is_nav4up = (is_nav && (is_major >= 4));
    var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );
    var is_nav6 = (is_nav && (is_major == 5));
    var is_nav6up = (is_nav && (is_major >= 5));
    var is_gecko = (agt.indexOf('gecko') != -1);


    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    var is_ie3    = (is_ie && (is_major < 4));
    var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
    var is_ie4up  = (is_ie && (is_major >= 4));
    var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
    var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
    var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
    var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
    var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);

    // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
    // or if this is the first browser window opened.  Thus the
    // variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
    var is_aol   = (agt.indexOf("aol") != -1);
    var is_aol3  = (is_aol && is_ie3);
    var is_aol4  = (is_aol && is_ie4);
    var is_aol5  = (agt.indexOf("aol 5") != -1);
    var is_aol6  = (agt.indexOf("aol 6") != -1);

    var is_opera = (agt.indexOf("opera") != -1);
    var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
    var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
    var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
    var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
    var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);

    var is_webtv = (agt.indexOf("webtv") != -1); 

    var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
    var is_AOLTV = is_TVNavigator;

    var is_hotjava = (agt.indexOf("hotjava") != -1);
    var is_hotjava3 = (is_hotjava && (is_major == 3));
    var is_hotjava3up = (is_hotjava && (is_major >= 3));

    // *** JAVASCRIPT VERSION CHECK ***
    var is_js;
    if (is_nav2 || is_ie3) is_js = 1.0;
    else if (is_nav3) is_js = 1.1;
    else if (is_opera5up) is_js = 1.3;
    else if (is_opera) is_js = 1.1;
    else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
    else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
    else if (is_hotjava3up) is_js = 1.4;
    else if (is_nav6 || is_gecko) is_js = 1.5;
    // NOTE: In the future, update this code when newer versions of JS
    // are released. For now, we try to provide some upward compatibility
    // so that future versions of Nav and IE will show they are at
    // *least* JS 1.x capable. Always check for JS version compatibility
    // with > or >=.
    else if (is_nav6up) is_js = 1.5;
    // NOTE: ie5up on mac is 1.4
    else if (is_ie5up) is_js = 1.3

    // HACK: no idea for other browsers; always check for JS version with > or >=
    else is_js = 0.0;

    // *** PLATFORM ***
    var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
    //        Win32, so you can't distinguish between Win95 and WinNT.
    var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));

    // is this a 16 bit compiled version?
    var is_win16 = ((agt.indexOf("win16")!=-1) || 
               (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
               (agt.indexOf("windows 16-bit")!=-1) );  

    var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
                    (agt.indexOf("windows 16-bit")!=-1));

    var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));
    var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1));

    // NOTE: Reliable detection of Win98 may not be possible. It appears that:
    //       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
    //       - On Mercury client, the 32-bit version will return "Win98", but
    //         the 16-bit version running on Win98 will still return "Win95".
    var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
    var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
    var is_win32 = (is_win95 || is_winnt || is_win98 || 
                    ((is_major >= 4) && (navigator.platform == "Win32")) ||
                    (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));

    var is_os2   = ((agt.indexOf("os/2")!=-1) || 
                    (navigator.appVersion.indexOf("OS/2")!=-1) ||   
                    (agt.indexOf("ibm-webexplorer")!=-1));

    var is_mac    = (agt.indexOf("mac")!=-1);
    // hack ie5 js version for mac
    if (is_mac && is_ie5up) is_js = 1.4;
    var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) || 
                               (agt.indexOf("68000")!=-1)));
    var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) || 
                                (agt.indexOf("powerpc")!=-1)));

    var is_sun   = (agt.indexOf("sunos")!=-1);
    var is_sun4  = (agt.indexOf("sunos 4")!=-1);
    var is_sun5  = (agt.indexOf("sunos 5")!=-1);
    var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
    var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
    var is_irix5 = (agt.indexOf("irix 5") !=-1);
    var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
    var is_hpux  = (agt.indexOf("hp-ux")!=-1);
    var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
    var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
    var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
    var is_aix1  = (agt.indexOf("aix 1") !=-1);    
    var is_aix2  = (agt.indexOf("aix 2") !=-1);    
    var is_aix3  = (agt.indexOf("aix 3") !=-1);    
    var is_aix4  = (agt.indexOf("aix 4") !=-1);    
    var is_linux = (agt.indexOf("inux")!=-1);
    var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
    var is_unixware = (agt.indexOf("unix_system_v")!=-1); 
    var is_mpras    = (agt.indexOf("ncr")!=-1); 
    var is_reliant  = (agt.indexOf("reliantunix")!=-1);
    var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
           (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
           (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
    var is_sinix = (agt.indexOf("sinix")!=-1);
    var is_freebsd = (agt.indexOf("freebsd")!=-1);
    var is_bsd = (agt.indexOf("bsd")!=-1);
    var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux || 
                 is_sco ||is_unixware || is_mpras || is_reliant || 
                 is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);

    var is_vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));

//--> end hide JavaScript

//-------------------------------------------------------------------------------------------------------
// Maximise : Auto Maximize Window Script- By Nick Lowe (nicklowe@ukonline.co.uk)
// For full source code, 100's more free DHTML scripts, and Terms Of Use
// Visit http://www.dynamicdrive.com
//-------------------------------------------------------------------------------------------------------

function Maximise() {
	top.window.moveTo(0,0);
	if (document.all) {
		top.window.resizeTo(screen.availWidth,screen.availHeight);
	}
	else if (document.layers||document.getElementById) {
		if (top.window.outerHeight<screen.availHeight||top.window.outerWidth<screen.availWidth){
			top.window.outerHeight = screen.availHeight;
			top.window.outerWidth = screen.availWidth;
		}
	}
}

//-------------------------------------------------------------------------------------------------------
// ReloadAtTop : Force the current page to be loaded at the top level, ie not within any frame.
// Jonathan Smith 03/01/2002
//-------------------------------------------------------------------------------------------------------
function ReloadAtTop() {
if (top != self) {top.location.href=location.href;}
}

//-------------------------------------------------------------------------------------------------------
// NewWin : Open a new window, maximised. This is used by the links page.
//-------------------------------------------------------------------------------------------------------

function NewWin(url,name) {
	//alert("NewWin:\njavascript="+is_js+"\nurl="+url+"\nname="+name);
	if (is_ie &&  !is_ie5_5up) {
		var win=window.open('javascript:document.location.href="'+url+'"');
	} else {
		var win=window.open('javascript:document.location.href="'+url+'","'+name+'"');
	}
	win.moveTo(0,0);
	win.resizeTo(screen.availWidth,screen.availHeight);

	//top.window.moveTo(0,0);
	//if (document.all) {
	//	top.window.resizeTo(screen.availWidth,screen.availHeight);
	//}
	//else if (document.layers||document.getElementById) {
	//	if (top.window.outerHeight<screen.availHeight||top.window.outerWidth<screen.availWidth){
	//		top.window.outerHeight = screen.availHeight;
	//		top.window.outerWidth = screen.availWidth;
	//	}
	//}
}

//-------------------------------------------------------------------------------------------------------
// NewWin2 : Open a new window with more parameters. Used in Birmingham Opera Company pages
// Does not currently have toolbar, menubar and location. Need to set parameters via array to enable useful defaults 
//-------------------------------------------------------------------------------------------------------

function NewWin2(url,name,width,height,status,scrollbars,resizable,acr,dwn) {
//	alert("NewWin2\nurl="+url+"\nname="+name+"\nwidth="+width+"\nheight="+height+"\nstatus="+status);
	if (arguments.length<2) {name="a_win";}
	if (arguments.length<3) {width=500;}
//	else if (width=="full") {width=screen.availWidth-20;}  
	if (arguments.length<4) {height=600;}
//	else if (height=="full") {height=screen.availHeight-120;}  
	if (arguments.length<5) {status="no";}
	if (arguments.length<6) {scrollbars="yes";}
	if (arguments.length<7) {resizable="yes";}
	if (arguments.length<8) {acr=(screen.availWidth-width)/2;}
	if (arguments.length<9) {dwn=(screen.availHeight-height)/2.5;}
	
	var win=window.open(url,name,'width='+width+',height='+height+',status='+status+',scrollbars='+scrollbars+
		',resizable='+resizable+',left='+acr+',screenX='+acr+',top='+dwn+',screenY='+dwn);
	if (width=='full') {
//		alert('maximising');
		win.moveTo(0,0);
		win.resizeTo(screen.availWidth,screen.availHeight);
	}
	win.focus();
}

//-------------------------------------------------------------------------------------------------------
// LinkTable : Start the table. 14/04/2003
//-------------------------------------------------------------------------------------------------------

function LinkTable(cellSpacing) {
	if (arguments.length<1) {
		// need to test window.parent.name as these are all in frames, ie the parent is the main window
		if (screen.width<1024 || window.parent.name=="width800") {cellSpacing=1;} else {cellSpacing=2;}
	}
	//alert ("window.name="+window.name+"\nwindow.parent.name="+window.parent.name+"\ncellSpacing="+cellSpacing);
	document.write("<TABLE border=0 class=link cellpadding=0 cellspacing=" + cellSpacing + ">\n");
}

//-------------------------------------------------------------------------------------------------------
// LinkHeading : Write the heading line on the links page. 14/04/2003
//-------------------------------------------------------------------------------------------------------

var alertCount=0;

function LinkHeading(text,headingClass) {
	if (arguments.length<2) {
		if (screen.width<=800 || window.parent.name=="width800") {headingClass='heading800'}
		else if (screen.width<=1024 || screen.height<=900 || window.parent.name=="width1024") {headingClass='heading1024'}
		else {headingClass='heading1280'}
	}
	if (alertCount <=1) {
//		alert ('linkHeading\nscreen.width='+screen.width+'\nscreen.height='+screen.height+'\nwindow.parent.name='+window.parent.name+'\nheadingClass='+headingClass+'\ntext=' + text)
		alertCount+=1;
	}
	document.write("<TR><TD class=" + headingClass +">" + text +  "</TD></TR>\n");
}

//-------------------------------------------------------------------------------------------------------
// LinkRow : Create a table row in the 'Useful Links' page. 03/01/2002
//-------------------------------------------------------------------------------------------------------

function LinkRow(url,name,text,width,linkClass) {
	if (arguments.length<4 || width=='') {width='full'}
	if (arguments.length<5 || linkClass=='') {
		if (screen.width<=800 || window.parent.name=='width800') {linkClass='link800';} 
		else if (screen.width<=1024 || screen.height<=900  || window.parent.name=='width1024') {linkClass='link1024';} 
		else {linkClass='link1280';}
	}
	if (alertCount<=1) {
//		alert ('linkRow\nscreen.width='+screen.width+'\nscreen.height='+screen.height+'\nwindow.parent.name='+window.parent.name+'\nlinkClass='+linkClass);
		alertCount=alertCount+1;
	}
	document.write("<TR><TD class="+linkClass+"><A href=\"javascript:NewWin('" + 
		url + "','" + name + "');\" class=link>" + text + "</A><font size=+0></TD></TR>");
}

//-------------------------------------------------------------------------------------------------------
// reSizeMax : Resize the window to the maximum avaliable
// Based on original Auto-Resize script by Jenovah http://www.jenovah.tk

// This code bypasses the "window.maximise()" which maximises the browser, not the window.
// This code works 100% with IE4+ and Netscape 4+ and does nearly all of the resolutions avaliable.
// The code needs JavaScript enabled to work.
//-------------------------------------------------------------------------------------------------------

// JS. This does work, but when the screen size is set to the absolute maximum, the window just goes off
// the top of the screen, and the bottom is partly hidden behind the status bar. 
function reSizeMax() {
	
	var width = screen.width;
	var curHeight = screen.availHeight;
	var curWidth = screen.availWidth;
	
	window.self.parent.moveTo(0,0)
	window.self.parent.resizeTo(curWidth, curHeight);
		
}

//-------------------------------------------------------------------------------------------------------
// Examples taken from Web Design in a Nutshell, p 374
//-------------------------------------------------------------------------------------------------------
function imgOn(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"_on.src");
	}
}

function imgOff(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"_off.src");
	}
}

//-------------------------------------------------------------------------------------------------------
/* Javascript definitive Guide - example 13-5. Downloaded from http://examples.oreilly.com/jscript3/

 * This function parses 'sep'-separated name=value argument pairs from the query string of the URL.
 * It stores the name=value pairs in properties of an object and returns that object.
 * The default value of the separator is &
 */
function getUrlArgs(sep) {
	var args = new Object();
	var query = location.search.substring(1);     // Get query string, ignoring first character '?'
	if (sep=='' || !sep) {sep="&";}               // Set the default separator 
	var pairs = query.split(sep);                 // Break at the separator
	for(var i = 0; i < pairs.length; i++) {
		var pos = pairs[i].indexOf('=');          // Look for "name=value".
		if (pos == -1) continue;                  // If not found, skip.
		var argname = pairs[i].substring(0,pos);  // Extract the name.
		var value = pairs[i].substring(pos+1);    // Extract the value.
		args[argname] = unescape(value);          // Store as a property.
	}
	return args;                                  // Return the object.
}

/* Example

var args = getUrlArgs();              // Get arguments.
if (args.x) x = parseInt(args.x);     // If arguments are defined...
if (args.y) y = parseInt(args.y);     // ... override default values.
if (args.w) w = parseInt(args.w);
if (args.h) h = parseInt(args.h);
if (args.dx) dx = parseInt(args.dx);
if (args.dy) dy = parseInt(args.dy);
if (args.interval) interval = parseInt(args.interval);
*/

//-------------------------------------------------------------------------------------------------------
// writeBocEmail used in Birmingham Opera Company pages
//-------------------------------------------------------------------------------------------------------
 
function writeBocEmail() {
	a='solutions.com';
	b='sandford';
	c='boc@';
	d='mail';
	document.write("<a href='"+d+"to:"+c+b+a+"' title='Send me an email' class=inlinelink "+
		"onMouseOver='window.status=\"Send an e-mail to "+c+b+a+"\";return true;' "+
		"onMouseOut='window.status=\" \";return true;' >");
	document.write(c+b+a);
	window.status=' ';
}

//-------------------------------------------------------------------------------------------------------
// closeButton()
//-------------------------------------------------------------------------------------------------------
 
function closeButton() {
	document.write("<div align=center><form><input type=button value='Close this window' onClick='window.close();'></form></div>\n");
}

//-------------------------------------------------------------------------------------------------------
function nothingButBitsOfCode() {
// fragments can be put here
	
	if (width >= 640) {
		window.self.parent.resizeTo(640, 480);
		window.self.parent.moveTo((curWidth - 640)/2,(curHeight - 480)/2);
	}
	if (width >= 800) {
		window.self.parent.resizeTo(800, 600);
		window.self.parent.moveTo((curWidth - 800)/2,(curHeight - 600)/2);
	}
	if (width >= 1024) {
		window.self.parent.resizeTo(1024, 768);
		window.self.parent.moveTo((curWidth - 1024)/2,(curHeight - 768)/2);
	}
	if (width >= 1280) {
		window.self.parent.resizeTo(1280, 1024);
		window.self.parent.moveTo((curWidth - 1280)/2,(curHeight - 1024)/2);
	}
	if (width >= 1600) {
		window.self.parent.resizeTo(1600, 1200);
		window.self.parent.moveTo((curWidth - 1600)/2,(curHeight - 1200)/2);
	}
	if (width >= 1920) {
		window.self.parent.resizeTo(1920, 1440);
		window.self.parent.moveTo((curWidth - 1920)/2,(curHeight - 1440)/2);
	}
}